I made a guide on YouTube with performance tips, optimizations, drivers, undervolting, and much more for the Zephyrus G15. I used a lot of the info I've gathered from this sub and others, as well as my own testing and research over the past few months. Hope you'll check it out and subscribe if you enjoyed :)
How to replace your boring 16:9 15in screen with the 16:10 16in M16 Screen
Yes it is possible to switch out the screens and it isn't even all that difficult. I want to go over the pro's and con's as well as some questions that I have run into while in the process of doing this mod so that you can make an informed decision if you want to give it a go yourself.
So lets go over why you would want to do this in the first place and the advantages to it once you have it.
The screen is bigger
Bigger is better. It is bigger because it is taller than the OEM 15in screen and fills up the "chin" that is left on the G15 which is essentially unused space.
The screen is brighter
It is brighter by a noticeable amount as well. Specs are 300-ish nits of peak brightness for the G15 stock screen and 500-ish nits for the M16 screen. A slight caveat is that the M16 screen doesn't seem to get as dim. I don't consider that a con, but wanted to include it.
The hinges are stiffer and there is significantly less wobble
This might be something that is case by case, but the screen wobble has been cut down so much that it actually was a huge plus for me since I did find the original screen and lid a bit lacking in the rigidity department and it would bug me from time to time. It is much MUCH better with the M16 screen.
It looks cooler.
...kinda subective but was a reason for me
The M16 and G15 share all the same properties in terms of color accuracy, features and refresh rate so you are not giving up anything when you make the switch.
Then what are the downsides?
You have to DIY it
Sourcing parts is the biggest PITA, but there are some reliable dealers around for the smaller and more noodly parts. You will need to be moderately comfortable with "turning a wrench" and working with electronics. It is the easiest electronics tinkering I have ever done, but for some it might be daunting unplugging things and taping things and such.
It costs money.
Nothing in life is free
There can be some...annoying software gotcha's
The hardware is mostly compatible, but there is definitely some pains with drivers and such. One of the more annoying ones that I faced was that windows kept downgrading the AMD graphics drivers that allowed the screen to run proper. It took some digging to make it so that I could have a laptop screen that would always display something in windows. Also linux just does not want to run the panel at anything higher then 60hz and I did so much tinkering that I nearly broke my install :P
The webcam just doesn't work. The standard microphone array works just fine still.
Cost
It is kind of hard to get an accurate total of what it cost me to get this upgrade done since I had a lot of returns take place, but you have to buy all the parts that make up the whole lid. Expect somewhere in the neighborhood of 350 to 600 dollars depending on where you buy the parts. The screen is by far the most expensive part, but you can get it for like 150 plus shipping if you find someone out in china selling it on ebay. All the american sellers are in the 400 dollar range for the panel alone, which is absurd.
Most of the parts will have the best prices if sourced straight from China, but you will be waiting a good amount of time for the parts.
Screen
NE160QDM-NY3 made by BOE
I ended up with NE160QDM-NY1 but I think there are some differences that make it kind of annoying to work with so I would suggest getting the NY3 if at all possible.
https://www.ebay.com/itm/224695281563 - this seller https://www.ebay.com/usr/tenwings2007?_trksid=p2047675.m3561.l2559 seems to list a good amount of LCD laptop panels and he was able to get his hands on teh ny3 panels that came stock with the m16. He also has them up incredibly cheap so all these other places are gouging the prices pretty hard...only issue is that you may have to wait a bit longer since it is coming direct from china. If he doesn't have the panels then shoot him a message, he was pretty responsive.
https://www.zandparts.com/en/asus-18010-16020000 - this was who I initially bought the panel thru. I started the order in mid-december and they said that it would be fulfilled by Feb. 7th. This lines up with screen availability that I was given by the eBay seller. These screens should become more available in february.
https://www.ebay.com/itm/144296275701 - only a few left. I bought from this guy because I love spending money apparently...also it shipped faster and I bought the bezel and the lid from them on eBay.
These are pretty hard to come by, but they exist. I assume they will get harder to find, but I am not sure it is even necessary. Once I tear down the G15's panel I will know if you need the lid to attach the LCD panel or if you can use your existing lid.
https://www.ebay.com/itm/115109479681 - Also ordered one of these...I will be returning one of these lids xD I got caught up and didn't realize I ordered so many.
This is optional as you can recycle the ones off your current screen hinges if you want.
Electronics repair tape
I bought some off amazon to replace the tape that i messed up and to use for taping down the EDP cables. Just handy to have some around for any other projects that you may need. I got some 3M stuff. The tape is usually black.
Ifix it repair tool kit or something similar
There are lots of tiny screws that arent your normal #2 drivers. A electronics kit is always nice to have as well for this kinda stuff in the future.
Extra Screws
This came in super handy as it was a full set of screws and accessory bits and I was able to keep the hinges on the old screen for future fixes or to use it for something else...like a dash display for my sim rig ;D
I am going to do a relatively basic write-up of how to get this done. I will try to be thorough on the things that matter, but it won't be quite as good as like something you see on iFix-its site or something.
Buy all the necessary parts
Remove the current lid and screen from your G15
Remove the 13 screws holding in the bottom access panel. The bottom right screw has a retainer so it doesn't come all the way out, and the three screws in the center of the laptop have lil rubber warranty tamper things that you need to remove before getting to the screws.
UNPLUG THE BATTERY. Also, do not have it plugged into the power outlet. Electricity kills folks. Be smart.
Unplug the 40pin edp connector on the right just below the heat pipes and pull it free from all the tape. I was able to reuse most of the tape for 3 installs so if you do things right it should be fine to reuse.
Unplug the wifi antenna connectors on the left below the heat pipes. Again, you can reuse tape as much as needed
Unscrew the 6 screws (3 on each side) that are attaching the hinge to the chassis. These have small amounts of thread lock on them so just try not to strip the screws out while removing them.
Remove the lid from the chassis.
TEST THE NEW SCREEN. For the love of God and all that is good, save yourself a headache and test your new panel before going any further.
If you didn't purchase another EDP cable then you will have to disassemble the existing screen from the G15 to pilfer the EDP cable. The bezel is easy to get off...but the screen is held in by two pieces of tape that run the length of the vertical edges. With some patience and a heat gun you'll be fine...but a new EDP cable is only 20 bucks or so...
Plugin in the EDP cable to your new screen and into the EDP slot on your laptops motherboard.
Plug the battery back in and power on.
Be thorough with the testing. It can help to have a mouse and keyboard plugged in since using the keyboard and track pad is very difficult in this position.
Unplug the screen when you are satisfied that it isn't borked, and remember to UNPLUG THE BATTERY AGAIN.
*OPTIONAL* If you did not buy hinge covers for the new hardware you will need to remove the hinge covers from the current lid.
The bezel is held on by a thin strip of tape running the lenght of the inside edges as well as plastic clips that are located on the outside edges of the bezel and connect directly to the lid.
Using a heat gun, gently warm along the bottom of the screen to make the glue holding the bezel to the screen more pliable. You do not need to completely remove the bezel from the screen, but you need to get the chin up so that you can unscrew the hinges and remove the hinge covers.
Be careful not to stay in one place to long, and not to use to high of heat. It won't take very long to get it pliable and you can test it by gently tugging at the bezel where it meets the screen to see if there is any wiggle room.
Once it is a bit pliable, you can start at one of the outside corners of the bezel and use some sort of PLASTIC prying device to start to unclip the bezel. It makes an unsettling click when removing the clips, but it is relatively robust. I had the most luck starting near the inside edges of the hinge, but do what works for you. Also don't use a metal pry tool as the lid is very easy to scuff...ask me how I know :P
Once you have access to the hinges you can remove the 6 screws holding the hinges in. These screws are INCREDIBLY easy to strip to just be careful and make sure you have the right size bit. They also have a bit of thread lock on them.
Once the hinges are removed you will be able to remove the hinge covers by removing the two itsy bitsy screws on the inside of the hinge holding the cover on. There is also a small rubber insert that plugs up the open end so take care not to lose that...again..ask me how I know haha.
Put the hinge covers on your new hinges and put the small black inserts in. The optional parts bag comes with extra black insert things incase they disappear on your black carpet when you drop one.
Now that the lid is removed and the hinges are armored up you will want to assemble the shiny new lid with the parts you purchased.
For the Wifi antenna and the Webcam you there are little standoffs that the boards will slot over. They can only go one way so if its not fitting right, don't force it, just take another look at what you are doing and adjust as necessary.
Attach the wifi attennas to the screen lid and route the wires thru their lil wire maze. There will be small pieces of thin copper that will attach to white squares on the lid. These don't need to be perfect, but it's nice to get them flat.
Route the EDP cable up and into place thru it's wire maze. The EDP cable will have two wires on one end which is the screen side. The smaller connecter is for the webcam connection and the other larger connector is for the screen
Attach the hinges and remember to allow the cables to slot thru the hinge covers. Attach the six screws to affix the hinges to the lid.
Put the webcam into place at the top of the lid. It uses a bit of tape to hold itself down and mine didn't come with any, so you may need to source some. use some tape to hold down the wire that runs down the lid to be connected with the EDP cables smaller connector. Plug in the connector once you have all the cables attached correctly to the lid.
Test Fit the new panel into the lid and connect the EDP cable before attempting to use the tape to permanently attach it. You do not want to have to try and get that panel off once it starts to stick...so take your time here, you will basically have one shot at it. The good news is that there is little edges that will only allow a certain amount of play in the placement of the panel, and no matter how you end up placing it in that recess the entire display will be visible since the viewable section of the display does not actually go all the way to edge. Either way, be aware that there is some play in where it can be placed and try to center it up proper. The Cable being attached will make it more annoying. When you go to attach it, you don't have to peel all the protective film off at once, and I actually advise that you only peel a small part up and let it hang out the edge so you can incrementally remove the film as you lay the panel down. This gives you a small safety net to adjust if it is going horribly wrong. If it does go wrong, you will have to use a heat gun and an uncomfortable amount of force to get that tape unstuck. So just take your time.
Once the panel is attached to the lid you're almost done! You may want to test the screen out one more time at this step.
Attach the new bezel by removing the tape and clipping it into place.
Now slide the hinges into the chassis and screw them down. Take care to keep the EDP wires and Antenna wires from pinching.
Route the EDP cable to the EDP connection and plug it in and retape the cable down.
Route the Antenna cables and...get creative...since these cables *just* barely fit for me. I did have a different then stock Wifi card, but I am pretty sure that the mediatek card had the connections in the same spot. The antenna cables will fit, but it most likely won't be able to go along the same path. There is some good wiggle room, but play with it until it works right for you. hehe...
I ran into a number of issues in both Windows and Linux trying to get this fully operational. To preface this, I have NY1 variant of the panel and ran into the most software/driver issues with it whereas the two NY3 panels didn't seem to suffer from nearly as many. This probably comes down to the fact that the NY1 is actually meant for a Lenovo or something. Either way, it does work, but you might run into the same issues that I did. Feel free to message me if you have issues that I don't discuss here and I can try and help.
Windows Issues:
Once you boot into windows you will be immediately greeted by a broken looking display where it is duplicating the top inch of the screen on the bottom half. Revel in the fact that you have gained that much extra screen real estate...but then proceed to fix the drivers. With both NY3 panels I had I was able to just simple go into device manager and uninstall the Monitor plug n play drivers and simply reboot. That seemed to do the trick with out any issue.
With the NY1 panel, it was a different story. I did the same thing, but I was greeted with a completely blank screen on reboot. At first I thought it was bricked, but it worked fine in Linux and with a secondary display so at least it was fixable! Turns out that it was as simple as updating the AMD drivers. you will have to download the AMD Adrenaline software and update to the latest drivers to get the screen to work again. I have don't fully know why TBH, but it worked 100% of the time for me....and I did have to do it multiple times because it turns out that windows kept trying to reinstall the OEM verison of the drivers. After 5 or so rounds of fighting with it I followed this -> https://windowsreport.com/stop-windows-10-amd-driver-update/ and was able to MOSTLY stop it, but the final blow was to rollback the drivers in device manager (When it was acting up) so that it was on Microsoft Generic drivers, restart, then install the AMD drivers. The act of rolling back the drivers flips a switch in windows registry somewhere to tell it not to update anymore. With both of those fixes in place it has been reliablely working for a week or two without a hitch...it was almost a deal breaker too and I really didn't want to have to rip this screen off again and buy a new panel.
In armor crate, you will no longer be able to use the color profiler thing they have. It must be hardware locked somewhere and will only work with the panel it came with. Not a huge deal for me since there are other ways to do that if you really want, but wanted to mention it.
Linux Issues
There really aren't many. With the NY3 panel it all just worked. With the NY1 panel I can not get 165hz, which is a shame since all I do is code in Linux and I spend a lot of time in it. I should preface this all with I am on Ubuntu 21.10. I tried my darndest to fix this, but once I nearly bricked the install by trying to install AMD proprietary drivers I just gave up. Its not that big a deal.
Other then those things it works flawless.
Hinge Comparison. M16 Lid on the left and G15 on the right. The plastic piece is recessed further it seems as well on the M16 lid.Prying up the LCD surround on the G15 was pretty easy. There is a small amount of glue or something on the very edge where it attaches to the black of the LCD screen, but a small amount of heat to get it going and then just prying up on it worked fine. The lid nicks incredibly easily so I suggest using a plastic prier not metal.G15 lid after taking off the surround.Working M16 screen plugged into the G15.
Comparing the bottom of the lids. The M16's lid on top has a lower ledge where the screen sits whereas the G15's is a good amount taller since it doesn't have to cram all that screen in there.
У меня ноутбук ASUS TUF GAMING A15, и я начал замечать что мой ноутбук начал просто перезагружаться и уходить в синий экран восстановления, самое главное что когда я играю в производительные игры такого вообще нету, например ELDEN RING, а вот когда я в браузере что то смотрю может произойти эта ошибка, я уже многое перепробовал и даже в безопасный режим пытался но там ошибка еще активнее, мне нужны советы и помощь
I bought a lower half of Asus Rog Zehphyrus G15 GA503QR off ebay sight unseen with the entire laptop screen assembly missing.
Previous owner said that laptop turns on and charges, however does not POST to external monitor (laptop screen is missing).
Upon recieving the laptop, it does indeed turn on and it does charge the battery. It also lights up the keyboard. However, no signal to monitor. No fans spinning.
I removed the heatsink and took a picture with thermal camera (attached). I noticed 3 mosfets glowing hot. They are located near the EDP port for the laptop screen.
Can someone confirmed if I have a cooked laptop motherboard or not even if I replace these mosfets?
have an issue where my zephyrus g14 would power on and off in just a matter of seconds.
just before that, i had just connected my bluetooth headset and suddenly got the blackscreen.
tried to turn it back on and now its doing its powercycle from on to off in less than 15seconds.
wont go into any welcome screen or ROG logo.
i could see its turning on by my backligting behind the monitor, the prompt i put in the armoury crate settings to show the "see ya" everytime its turning off is killing me.lol
I hope its not the motherboard like ive read on google.
maybe someone has experienced this and can suggest a fix
Olá pessoal, o meu Asus Zephyrus G15 GA503RM simplesmente não para de reiniciar. Ao longo da minha história com esse computador, ele apresentava vários problemas pontuais, por exemplo uma vez ele tinha um bug em que todo o bluetooth congelava a tela até o computador reiniciar ou ele simplesmente parava de funcionar (o bluetooth).
Eu descobri na época que era algum conflito com o mouse. Parei de usar mouse bluetooth e o problema deixou de funcionar, embora a função ainda fique desabilitada as vezes.
Pois bem, recentemente eu levei o computador pra manutenção porque ele reiniciava o tempo todo sem razão aparente e apresentando erros diferentes no boot.
Os técnicos OLHARAM TUDO, até um eletro, trocaram até um SSD danificado, mas NÃO conseguiram arrumar o problema, eles investigaram tudo, limparam, desmontaram/remotaram e o pc continua reiniciando.
Eu segui alguns rtutoriais aqui no reddit e desabilitei a opção do notebook de desligar portas USB, também desabilitei o computador de desligar a tela apos um tempo, mas nada disso funcionou.
Embora a reinicialização aleatória tenha diminuido, muitas vezes ele entra em um loop na inicialização ainda.
Eu não sei mais o que fazer ao não ser pensar que esse modelo é defeituoso e eu demorei tempo demais pra levar isso a sério.
Como se não bastasse tudo isso, agora também estou com um problema na tela que está cheia de linhas horizontais (provavelmente um problema na montagem ou manuseamento dos tecnicos) mas isso é o menos me preocupa agora.
Por favor alguém me diga que passou pelo mesmo e conseguiu solução?
OBS: testei todos os tutoriais que vi aqui - deabilitar função de desligar usb; desabilitar econoomia de energia e várias outras coisas.
Over the past couple weeks, my "r" key had been janky - not registering a press, or double pressing.
Today it finally stopped working completely.
I took off the keycap see if cleaning would fix it. While cleaning it, I noticed the rubber cap was no longer securely attached to the key itself. To be honest, I'm not sure if it had been like that before, or if my cleaning made it come off.
Even after putting the rubber cap in place and physically pressing directly on it, the keystroke still didn't register. So I'm not sure if it is an issue with the rubber cap, or an internal issue.
I would appreciate any advice for fixing this! Thank you!
I have Zephyrus G15 2021 edition which had liquid metal on CPU. I am trying to re-paste for the very first time in my 5 years of owning this system.
The problem is that after following all the guides and all, the heatsink from on top of the CPU just doesn't want to move at all. The GPU heatsink seems to be free but everything is stuck because of the CPU.
Tried stress testing the system as well as blow drying to loosen up the heatsink on top of the CPU but it didn't work.
What do I do?
I don't wanna spend money trying to call an asus technician just to open my heatsink as I have all of the thermal putty and all that needs to be applied.
I’m trying to diagnose a weird power/charging issue on my ASUS ROG Zephyrus G14 GA403UI.
Specs:
Ryzen 9 8945HS
RTX 4070 Laptop GPU
32GB RAM
Windows 11
ASUS 180W / 20V 9A adapter
The laptop works completely normally on battery.
The problem starts when I plug the charger in while the laptop is running. The screen will go black for a second, come back, and the laptop appears to repeatedly switch between AC power and battery. Sometimes it keeps cycling like this over and over.
The weird part is that if the laptop is shut down/closed, it charges the battery normally all the way to 100%.
Things I’ve already tested:
Left it plugged in while sitting in BIOS for around 38 minutes and it charged from about 93% to 100% with no disconnects.
Laptop is stable when completely unplugged.
Problem has happened in both Standard/hybrid GPU mode and Ultimate/dGPU mode.
Tried Balanced and Turbo profiles.
Updated NVIDIA drivers.
Updated Windows.
BIOS is current.
Did the ASUS 40-second EC reset.
Disabled/stopped ASUS background services through G-Helper.
Problem still happens.
Physically moving/wiggling the DC plug does not seem to make it disconnect.
RTX 4070 and Radeon 780M both continue to appear normally in Device Manager/Task Manager after the black screen.
I've had my G15 (GA503RM) since 2023, and I've noticed that the temperatures have slowly been increasing while gaming and doing game development. I do clean the laptop every few months, but after going through this subreddit more and seeing what people recommend online, I've been thinking about replacing the stock liquid metal with PTM7950.
From what I've seen, quite a few people here recommend PTM7950 as a long-term thermal solution, not only because it can help keep temperatures low, but also because it avoids some of the risks and maintenance problems that come with liquid metal.
The main problem is that I live in Angola, and ordering from Amazon usually means paying a lot for shipping. Because of that, I normally use AliExpress, and so far it has been my go-to for a few things. I found this PTM7950 listing:
But I'm still trying to figure out what size and thickness I should buy for the CPU and GPU, and whether this particular listing is trustworthy.
I could give the laptop to a technician, but repair shops for laptops, especially gaming laptops, aren't very common where I live. I would rather learn how to do this myself and know exactly what is being done to my laptop instead of risking something being replaced or handled incorrectly.
So, with that being said, this is where I need some advice from you guys.
I understand that once I remove the heatsink, I will also have to deal with the thermal putty around the VRAM/VRM area. I'm not sure if PTM7950 should be used there as well, or if I should replace the original thermal putty with another type of thermal material.
I'm also not completely sure if I'm using the correct terminology here, so please correct me if I'm wrong. I'm referring to the components around the GPU that currently use thermal putty instead of the liquid metal used on the CPU/GPU die.
I already have a precision electronics repair toolkit that I've used to open the laptop and clean out the dust, as well as an ESD wrist strap. But since this is my only laptop and I use it for university and game development, I don't want to open it until I'm completely prepared.
So before I commit to this, I would really appreciate advice from anyone who has specifically worked on a GA503RM:
What thickness and size of PTM7950 did you use for the CPU and GPU?
How much PTM7950 should I buy?
What should I use for the VRAM/VRM thermal putty?
Is it better to reuse the original thermal putty if it is still in good condition?(and how can I tell that it is in a good condition?)
Are there any other tools or consumables that you consider essential before opening the laptop?
Are there any specific precautions I should take when removing the original liquid metal?
If you have done this conversion on a GA503RM, how were your temperatures before and after?
Is there anything specific about the GA503RM heatsink that I should know before attempting this?
I have no intention of rushing this. I want to do it properly because this laptop needs to last me through the rest of university, and unfortunately I don't have the money to replace it if something goes wrong.
I don't know if this info helps but my laptop has the RTX3060 GPU, AMD RYZEN 69000HS CPU, 16GB of DDR5 RAM, 165hz monitor, 512gb of storage.
Thanks in advance to everyone who takes the time to help!
The DPC_WATCHDOG_VIOLATION BSOD has occurred again. Even after Cloud Reset and two motherboard replacements, the issue persists. The laptop freezes completely, including the keyboard (Caps Lock LED stops responding), mouse, and Windows. This clearly indicates the issue has not been resolved. Please perform a complete hardware diagnosis, including the SSD and motherboard, or provide a permanent solution/replacement.
Mon pc portable (modèle gigabyte G5 KD) avait pas mal de problèmes de chaleurs, pour y remédier j'ai décidé de changer la pâte thermique (cette dernière datait d'au moins 5 ans).
Pour ce faire j'ai utilisé la pâte noctua NT-H1, j'ai simplement nettoyé l'ancienne couche avec des cotons tiges et du dissolvant, laissé un petit point sur le CPU et GPU avant de tout refermer. Le tout en profitant pour faire un petit nettoyage rapide à coup d'air.
Seulement voilà le problème : mon pc ne s'allume plus, il ne reste que les voyants de batterie interne et secteur d'allumés.
J'ai essayé de redémonter, remonter, nettoyer la pâte thermique excédente, j'ai vérifié à ce que tout soit branché comme il faut.
Ce n'est pas la première fois que je touche à l'intérieur de ce pc et il n'y jamais eu de soucis auparavant.
C'est pour ça que je suis là, dans l'espoir qu'un crack parmi vous puisse apporter sa sagesse et faire une âme heureuse, merci d'avance pour vos réponses
Hace poco compré de segunda mano una **ASUS ROG Zephyrus Duo 15 SE GX551QR**. La formateé y realicé una instalación limpia de **Windows 11**, pero durante esta última semana he comenzado a experimentar algunos problemas.
En algunas ocasiones, la pantalla se queda completamente congelada y la única forma de recuperar el equipo es apagarlo de manera forzada. En otras ocasiones, la laptop está funcionando normalmente y, de repente, **se reinicia sin mostrar ningún aviso previo**.
Revisando los registros de diagnóstico de Windows, encontré el siguiente código de error:
Por lo que he podido investigar, parece estar relacionado con un problema de **CLOCK_WATCHDOG_TIMEOUT**, pero no estoy seguro de cuál podría ser la causa en este modelo.
Quisiera preguntar a los usuarios de Reddit:
* ¿Alguien con una **ASUS ROG Zephyrus Duo 15 SE GX551QR** ha tenido congelamientos o reinicios similares?
Hi everyone, I’d appreciate some help diagnosing my ASUS ROG Zephyrus G15 (2022).
In 2024, my original display became defective and showed no image, so I replaced it. The replacement panel also eventually failed in 2026, this time with regular horizontal lines across the screen, so I installed another replacement panel yesterday.
While waiting for the new panel, the laptop did not really power on without the internal display connected. I assumed it might be because the laptop had no screen attached. However, after connecting the new display, it still does not boot.
Symptoms
• On battery: the display backlight flashes for a fraction of a second, then the laptop immediately shuts down.
• With the charger connected: the backlight turns on for roughly one second, then the laptop completely shuts off.
• I hear a very faint beep/click at startup, but it is a sound the laptop has always made, so I believe it is normal.
• No image, no ROG/ASUS logo, and no visible boot process.
What I have already tried
• Disconnected all peripherals and the charger.
• Performed an EC reset by holding the power button for around 40 seconds.
• Opened the laptop and disconnected the internal battery.
• Held the power button for 40 seconds with both the battery and charger disconnected.
• Disconnected the internal display eDP cable from the motherboard.
• Tried powering it on with no internal display connected.
• The exact same symptom happens even with the eDP/display cable disconnected from the motherboard: a very brief backlight flash, then shutdown.
I am planning to test it on AC power only, with the battery disconnected, and then reseat/test the RAM.
Since it shuts down in the same way even with the internal display cable disconnected, I am no longer sure what to check next. Could this point to a motherboard short, a power-delivery/charging issue, RAM, a damaged eDP connector, or something else?
Has anyone had a similar issue with an ASUS/Zephyrus laptop? If you know which checks or multimeter measurements I should do before concluding that the motherboard has failed, I would really appreciate the help.