PC wont boot.... No beep

aqol45 · 17 Nov 2024 at 22:52

So I have been having some fan issues & whilst tinkering around inside (I was trying to connect a 4 pin connector to a suitable port on mobo) the pc cut out!!

I booted back up but no signal to monitor.... Graphic card fan running, CPU fan running, fan leds working however no beep on start up!

I guess I have fried something? Mobo? Power supply?

Any ideas
Win 11
Asus b550m mobo
Rtx 3060 graphics card

Philtor · 17 Nov 2024 at 23:57

This post would be better in general hardware, but just to be clear… you were connecting a fan up whilst the motherboard was powered on and the system running?

maj · 18 Nov 2024 at 06:30

Aye you need to clarify if you did all this with the PC running. If you did then.....

Try a CMOS reset.

aqol45 · 18 Nov 2024 at 08:49

Yeah did it whilst still running..I know!!!!

I have taken out battery & left for a few mins... No difference

aqol45 · 18 Nov 2024 at 13:50

I have also now shorted the mobo using clrtc but again no boot

aqol45 · 18 Nov 2024 at 14:02

Just noticed when power is connected, I have a solid yellow light coming from mobo.

Any ideas?

Philtor · 18 Nov 2024 at 14:48

Sounds like you have bricked the board. Could test with just one stick of RAM at a time and without the GPU if you have onboard graphics you can use. Does seem like the board is damaged but.

pepp77 · 18 Nov 2024 at 14:50

Google does suggest yellow light is Memory related in one form or another.

Pulseammo · 18 Nov 2024 at 17:47

Was the 4 pin connector a fan header?

Sounds like you shorted some power rail to ground and triggered over current protection - have you tried completely disconnecting the PC from the wall, turning off all switches and leaving it for a minute, then connecting the power cord back up and trying again?