PC is not booting, EZ DEBUG stuck at CPU LED

[damian61]

I just sold a working pc to someone two days ago, now he contacted me that the PC is not working anymore. Based on the provided pictures, all fans are spinning, rgb leds are on, but there is no post. The EZ DEBUG led is lighting up at the CPU. 

 

Specs:

Ryzen 3 1200 / MSi A320m Pro VD / 1x16GB DDR4 / Rx 570 / Corsair VS450

 

Pc had the last bios, I did Heaven benchmark, Furmark, Aida64 stress test before I gave it to him 

 

I asked him to reset the bios somehow, re-seat the ram, power connector at the CPU but its not working. Any idea what could be the issue? 

 

 

 

 

 

 

[ChrisLoudon]

17 minutes ago, damian61 said:

Any idea what could be the issue? 

Hi buddy,

 

First think to do is take off the cooler and remove the CPU. Double check there are no bent pins and pop it back in and get the cooler back on. Probably use the opportunity to reapply some thermal paste.

 

If that doesn't work, make sure the motherboard isn't touching the case or something hasn't come lose and is causing a short in the small gap between the back of the board and the chassis. Stripping everything out and building on your kitchen table (bench build) is a good way to eliminate that as possible cause. You'd be surprised how many times just stripping a PC down and putting it back together kicks it in to shape.

 

If neither of the above steps work, your now into trying to boot with as little hardware as possible. Mobo + CPU + GPU + 1 stick of ram (No hard disk or any other devices)

 

And if that doesn't work, run for the hills!

[damian61]

On 4/5/2024 at 1:30 PM, ChrisLoudon said:

Hi buddy,

 

First think to do is take off the cooler and remove the CPU. Double check there are no bent pins and pop it back in and get the cooler back on. Probably use the opportunity to reapply some thermal paste.

 

If that doesn't work, make sure the motherboard isn't touching the case or something hasn't come lose and is causing a short in the small gap between the back of the board and the chassis. Stripping everything out and building on your kitchen table (bench build) is a good way to eliminate that as possible cause. You'd be surprised how many times just stripping a PC down and putting it back together kicks it in to shape.

 

If neither of the above steps work, your now into trying to boot with as little hardware as possible. Mobo + CPU + GPU + 1 stick of ram (No hard disk or any other devices)

 

And if that doesn't work, run for the hills!

I have some updates.

 

I've got back the PC on Monday. I brought it home, I plugged it in to my TV and it worked fine. I gave it back to the buyer the day after, I made some tests and videos to prove it that the PC worked. When he got it back the PC worked that day for him as well, but he wasn't able to turn on the PC again the day after...

 

For me whats very strange, that when I plugged in the PC, I saw the bios reseting itself after like 2 restarts the PC booted fine to windows, so it means that the buyer was not able to reset the bios. First I thought he did something wrong or whatever, but now the PC is not working again, and I think there is an issue with the buyers power outlet or something, like the voltage is not enough to start the PC or some similar issue.

 

I had the computer back for 2 days, I turned it on and off like 20x times, never experienced any issue. 

 

What do you think about this? I think after I gave him back the PC the psu still had some charge inside and thats why he was able to run it, but the next morning he faced with the same issue, mobo is not booting at all