Question no post, mix of GPU and CPU light on debugger

karas667

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Oct 30, 2011
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hello and thanks in advance for reading. I originally posted this issue in June last years and still have not found any solution. I think the issue is with either the mother board or CPU but i can't afford to replace both so I need to be sure before I get a replacement.

the short version is, no boot, EZ debug VGA light on, swapped to new GPU I know works, same, fully take build apart, thought it was a bad stick of ram but that was a dud after putting it back together when CPU light starts to come on instead of GPU light, when taking it apart and putting it back together I fixed 5 bent pins on the CPU but I am quite sure I caused these while taking it apart, next few months a mix of the GPU and CPU light, last few months has only been the CPU light, and I have a pattern that gets it to boot most of the time, 1st boot, black screen, restart button once then hold power button to power off and power back on straight away, this gets the build on and working until I next forget and turn it off or a power cut etc.

my previous post now shows as though it was never approved to be visible on the forum but the content is below.
also I have been through the full no post sticky thread and fully replaced the power supply, the only concern on the no post sticky is the bent pins but I am quite sure I caused these when trouble shooting and when the system does fully boot up it works fine.

old post/long version
so my newest build started having random events where it would not boot, the EZ debug VGA light was on each time, I had just recently bought a 2nd hand XFX R9 290 and assumed the "new" card was faulty, the card has some strange brown flakey markings that cover about 1/3rd of the board on the back (plastic and metal surfaces) and so I swapped back to my old XFX R7 360DD but within a day the same issue happened again, from here i took the entire system apart, I fixed 5 bent pins on the CPU which I am 99% sure where cause when I removed it as the thermal paste had fused the CPU to the cooler and they pulled out together so the CPU bracket was still locked, everything was cleaned and I started some boot tests, so with only SSD, MOBO, CPU and 1 stick of RAM everything seemed fine (no screen to be sure as no integrated graphics), connected the R7 360DD and booted fine, swapped to R9 290 and again booted fine (confused.jpg),

So then i reconnected additional SSDs, the USB 3.0 header for the case and the 2nd stick of RAM, suddenly no boot, removed 2nd stick of ram, booted fine, wondered if it was a bad slot or bad stick so swapped 1st sick for 2nd and booted with only that one in alone, no boot, swapped back to 1st stick and booted again, so its a bad stick or so i thought, got case all back together connected periferals and suddely no boot again, right so the only thing now is a periferal or something about the case, as i am diconnecting periferals one by one to no joy suddenly i thought i had moved some power cables as i put the case side back on, back on desk, side off, bend the cables back and it boots, add 2nd stick of ram and again still boots, so at this point i am now convinced that it was a bad cable from the PSU causing the GPU to not power up randomly which would explain the mixed results, so i replace the PSU and all seems fine for a few days but again random no boot, EZ debug VGA light back on again ?

at this point i have no idea what the issue could be, would there be a way to check if it's a bios issue? any ideas welcome.
i am considering a full reinstall of windows to rule out some strange driver issue although the previous driver was fully uninstalled with a driver remover tool.


SPEC:
MOBO - MSI X570 Pro
CPU - AMD RYZEN 7 / 3700
RAM - PNY 16GB (2X8GB) 3200hz
GPU - XFX R9 290 (with an R7 360 available as well)
PSU - CORSAIR CX750F
Storage -
1st - Kingston 240GB SSD
2nd - Kingston 240GB SSD
3rd - Kingston 960GB SSD
 
Hey there,

So the problem here for us, is that it will be difficult to narrow down, and be absolutley sure.

To answer your question, given the pins were bent, and the CPU/socket was strained when removing the CPU, it's possible you've damaged both.

I'd suggest, bringing this PC to a local repair store. Get them to swap out both the mobo/CPU and test with your current parts, or just with a replacement CPU alone. This might cost just 20£$€ or so. If you follow the wrong suggestion here, you may buy something quite epensive that may not solve the issue. So bringing to a local store to diagnose the problem will be the cheapest way to get the answer you need.
 

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