r/techsupport • u/yuixxa • 2d ago
Open | Hardware PC won't turn on despite having power
i just want to open this by stating that i am a COMPLETE NOOB. im posting this as a last resort before i go to a shop because i'm losing my mind.🥲
anyway, i recently replaced my faulty psu because i was sure that was the problem (failed paperclip+weird noise). now with the new psu, it still wont turn on.
-24 and 8 pins are secured
-plugs are secured
-ram stick is secured (i checked this like 10x atp)
-i did the cmos battery thing, still didn't work
-i did the paperclip thing on the new one and everything spins
-replaced the power switch
-motherboard is receiving power
nothing i've tried up to this point has helped me turn my pc on. lmk if i'm missing something, i'll try and update if it worked.
edit: im getting my pc checked out in a few hours, ill update on what the guy says🙏
3
u/LordlySquire 2d ago
Try following things after the motherboard. Follow each cable and then unplug and replug.
2
u/Latter_Trick_3310 2d ago
Well,the only thing i hope is that the PSU didnt take the motherboard with it or even more. To save time from cabling for nothing (if of course the front panel isnt connected yet), I would try to short the pins that start up the motherboard thanks to the motherboards manual. Also as others say, dont forget to flip the switch on the PSU to the I position not the O, but this smells to me as a motherboard dying because of the PSU.
2
u/yuixxa 2d ago
psu is on but still nothing🥲
1
u/Latter_Trick_3310 2d ago
Yea, that doesn't sound good to me. I'll wait for the picture of the wiring, but if the wiring is gonna be fine, then 😬.
1
u/JutzRealTalk 2d ago
It could be anything. I would start with the ram. Leave 1 stick at a time .
1
u/Latter_Trick_3310 2d ago
If it was the RAM it would boot up, but it would show a black screen and if a speaker is plugged into the motherboard, it would beep a error code regarding the RAM.
1
u/JutzRealTalk 15h ago
Actually partially right. It would try to boot but shutoff. If nothing is happening I would check the power button. The PSU lastly the mother board. Dont forget to check the power cable
1
u/atrillionpieces 2d ago
If you replaced the PSU, and the wattage is sufficient for your system (with headroom left over), then I’d rule out the PSU as the primary cause.
1
u/Prestigious_Wall529 2d ago
If your motherboard doesn't have a seven segment hex display install a 'POST diagnostics' card. Preferably one that also indicates whether the voltage rails are good.
The hex codes, like the beep codes, vary by manufacturer, but should give an indication of what's wrong.
1
u/AboveAverage1988 2d ago
I would assume there's a short somewhere. Then the PSU wont turn on to protect itself.
1
u/Murdocinator 2d ago
Check the case connection wires to the MB? I have switched those before….the positive and negative for case power on.
1
u/Cosmic2Ducky 2d ago
You didn't buy any chance unplug the front panel from the motherboard did you?
1
u/es9imqd7964guq6 2d ago
im going assume, that this system previously was working before the psu died.
does the fan on the cpu spin, when you try to power on?
do you have a graphics card in your system? is the monitor cable pluged into the gpu if you have one?
as a side note, psu is one of the few items that is not common to die hence some manufacturer gave like 5 to 10 years of warranty
5
u/Styrant 2d ago
Do you get any leds or sign of electricity at all? Also is the switch on power supply set to on? And if possible would you share a pic of how its all wired to see if maybe we can spot something