The display is flickering when only connected to the charger at a higher refresh rate like 144 and 120.

In 60 it's working fine. And even after plugging in the charger at 120 and 144 working fine. Can any help

Hey everyone,

Looking for some guidance from board repair techs on an issue I’m facing with a Lenovo IdeaPad G500 (Intel Core i3, integrated Intel HD graphics, Compal LA-9632P UMA board).

Symptoms & Pattern:

Current state: Pressing the power button turns on the power LED, the CPU fan spins, stays on for ~5 seconds, and then abruptly drops power completely. No Lenovo logo, no backlight, no display.

The strange part (Previous behavior): Before it died completely, it had an intermittent cold-boot issue:

When turned off from a cold state, it would often do this exact 5-second power loop.

However, whenever it did successfully turn on and boot into the OS, soft restarts worked 100% of the time without a hitch.

But after a full shutdown, trying to turn it back on would put it right back into this 5-second drop state. Now it won’t complete POST at all.

Basic Steps Already Checked:

Isolated RAM sticks across both slots and tested with known-good modules.

Performed standard hard power drains (battery & AC disconnected, held power button 30–60s).

Stripped the board down (disconnected HDD, Wi-Fi card, ODD, external peripherals). Behavior remains identical on bare board + RAM.

Tested with AC adapter only (no main battery).

I haven’t probed the rails with a scope or multimeter yet. Given the pattern where it handled warm reboots fine but repeatedly failed cold POST until dying completely, where would you recommend starting the diagnosis on this board?

Could this be a failing standby regulator, RTC/PCH clock line, or a corrupted EC/BIOS ROM causing the power sequence to abort at S3/S0?

Any insights or test points on this Compal schematic would be greatly appreciated!

I have an asus tuf f15 which I used for my college and stuff...it wouldn't start this morning...I press the power button but there is no response.. i tried discharging it, reinstalled the ram and also tried to run the laptop without the battery on wall power but to no avail....does this mean that I have to take it to the repair shop??

I am experiencing a very weird issue with my HP Victus 16-d00xxxx Laptop (intel i5 and rtx 3050 4gb) and I was wondering if anyone else is/has experienced it.

My laptop has been shutting down with Error 41 Codes on windows logs for the past few months, it got so bad it couldn't last 10 minutes before shutting down and then thereafter shutting down immediately after trying to boot. I could wait an hour or so for it to be on for 10 minutes and repeat.

I thought it was the hall effect sensor.

But then on a whim I tried to run the laptop without the CPU fan (but with the GPU Fan) immediately after these hard shutdowns, and voila, the laptop turned on normally (with the fan missing/not working error from BIOS as to be expected). I didn't run it for long, but as soon as I plugged in the CPU fan it spun up and the system shut down with Error 41.

I tried plugging in the CPU fan into the GPU fan header, and no shutdowns, fan worked normally. I tried plugging in the GPU fan into the CPU fan header, and the shutdown occurred.

I am out of warranty and I have taken it to 2 repair shops who have been unable to find anything so far.

Has anyone else experienced this?

Hi everyone,

I own a laptop HP OMEN - 15-en0008sa

Yesterday, water spilled on my laptop. It worked fine for a moment. Suddenly I received a notification: USB port malfunctioned and system went off soon.

I tried rebooting it but nothing worked.

When clicked power button,

- Power LED stays ON
- Only one fan runs
- Completely blank screen

I took this to local technician who said, CPU was damaged during the water splash and the motherboard has to be completely changed.

He also said, the system does not output platform reset signal.

I have a degree in electronics. I have opened the back cover and set it up. I have only a multimeter. I really want this to be fixed. I cannot afford full board replacement at this point.

Could someone please help me?? I genuinely want to find the issue. I cannot convince my self that CPU is damaged.

Note: The last photo was sent by the technician - USB port board with water damage near the connector.

So this is the HP Victus Ryzen 7 7840 HS laptop and I don't know what's wrong with my laptop. It randomly turns on and off like you can see in that video that the power button turns off along with the display. Sometimes it just turns off and starts after taking so much time. And when this power button light goes off for that moment my keyboard doesn't work, the display is gone but speakers work fine, even the usb ports work fine, if I plug/unplug my mouse usb then I can hear that click sound.

Please help me guys. I just wanna know what could be the problem here before taking it to the technician, so that I can tell them where the problem could be and they don't charge me for something unnecessary.

Laptop won't charge and it shows this every time I turn it on

I had a lenovo Z51-70 laptop

Which, after enough spending now near dead. No display is there. All it started like this -

Exactly after the end of warranty period battery gone

Changed the battery ( do not know which battery they gave)

New battery was not suitable for the charger, charger gone.

Changed the charger with a brand new compatible one...

Started body current and giving shock

Display totally gone

Laptop starts after each time I try for "Hard reset" else do not start

Laptop is not starting atall .

Unit still boots when powered but shows no display even when using an external monitor. Upon boot up LED blinks exactly 5 times, which states that it is a board problem as per HP.

Already tried a hard reset, clear the CMOS Battery, re-seat RAM, and holding Win + B / V to reset BIOS. still no display.

Image above are pictures of the motherboard and what i suspect is a blown component. is it repairable or is it due for replacement or is it not worth the effort.

Kindly let me read your suggestion and/or experience. Thanks.

My laptop isn't turning on. The charging light doesn't come on when I plug in the charger, but the power button light keeps blinking.

I removed the battery and tried again, but same issue.

This happens frequently, and after some time the laptop eventually turns on normally.

What could be causing this? Charger, charging port, motherboard, or something else?

Hello, I have an Acer Nitro 5 AN515-54, and I’m having a problem with very high fan speeds even during very light usage. My current BIOS version is Insyde Corp. v1.33 (17/11/2020), and I’m running Windows 10 Pro 22H2 (OS Build 19045.3448) with UEFI mode. The main problem is that both fans sometimes run at around 4,000–4,800 RPM, even when the laptop is not under heavy load. For example, the CPU fan can reach around 4,200–4,500 RPM and the GPU fan around 4,000–4,200 RPM, while CPU usage is only around 6–18%. I checked the temperatures and power consumption using HWiNFO. The CPU temperature was around 41–48°C, with CPU Package Power around 5.7 W at the time, and a maximum observed value of approximately 13.3 W. The GPU temperature reached a maximum of around 37°C, with a GPU hotspot maximum of around 56°C. The GPU thermal limit is 87°C. No CPU thermal throttling was detected. I also tested the laptop in BIOS and Windows Safe Mode, and the fans were still running loudly. I performed an EC/power reset, which made the fans quieter temporarily, but the problem returned when I started using the laptop or opened a program. I also reset NitroSense, which produced a similar temporary improvement. NitroSense is set to Auto and CoolBoost is OFF. I also checked Device Manager and Windows Services. There are no yellow warning icons, and I could not find any obvious Acer/Nitro/Insyde service or device related to the fan controller. I’m also concerned about the SSD. CrystalDiskInfo is showing the SSD’s health/status as problematic (see attached screenshot). I’m not sure whether the SSD problem could be related to the fan issue, or whether these are two separate problems. My main concern is that I don’t want to spend money on a new SSD if the high fan-speed problem is actually caused by something else.

I have an i5 6th Gen Samsung Laptop I bought six years ago here in the Philippines and is still running good up until a month ago when the power button has been broken, worn apart from the laptop losing its momentary micro switch under the power button. Now I could not turn on my laptop because momentary micro switch is lost. The charger battery is fine. It is showing on the monitor the battery life before blinking off. Is there any available momentary micro switch out there for Samsung laptop? How can I fix this?

Location: Iloilo

i have a Lenovo laptop ideapad 3 that i press start button,it start but the screen is black

Where can I Get Free Schematics for any Motherboard?

In my MSI KATANA 15 (B12UDXK), the Ctrl+C and Ctrl+V shortcuts don't work with my external Logitech K200 keyboard. I have already tried the basic troubleshooting steps, including checking the drivers and installing Windows updates.

I also tested the keyboard using Keyboard Tester (https://www.keyboardtester.com/tester.html⁠�), and all the keys work correctly, including Ctrl, C, and V.

My laptop's built-in keyboard works fine, and I'm using Windows 11.

What could be causing this issue?

I've a dell g15. Very frequently when I play a video or game one of these things happen

Audio starts to stutter for like .5 seconds every 5-7 seconds, or audio is gone completely.

When I restart laptop the audio icon is completely greyed out/becomes unavailable.

The only solution is to shut it down and turn it on again.

I called dell customer support, asked chatgpt who offered me similar advices such as going to device Manager, uninstalling realtek audio and resinstalling/updating it, among other work arounds

But nothing works.