Solved PC Crashed- B250F won't power on

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Daan

PCHF Member
Aug 25, 2024
3
0
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Greetings gentlemen,

In my country there is problem...

Intro:
Last night as I was playing farming sim during a mild thunderstorm (in the distance, not overhead), the pc suddenly turned off as if a fuse of my house was blown. Upon further inspection, no fuses were blown and the incident was isolated to my PC. I play this game with my mrs, and her PC was still running fine.

My analysis:
Attempt 1: Naturally, the first thing that comes to mind is of course the PSU or a faulty connection (My PC case is now 20 years old). I proceeded to open the rig and reseat all connectors. Connected the power, mobo indicates it is powered, no error lights. I tried turning it on. Very briefly, like for a flash of a second, the blue LED's of my case fans blinked, then nothing. Then that smell of solder. ****.

Attempt 2: Opened up both our PC's and swapped out PSU's. Her PC boots fine with my PSU in there. My PC shows the same symptoms: quick flash from the fan LED's, and then the smell of solder. ****.

Attempt 3: Reduced the amount of connected harddrives and casefans, just connected mobo, cpu & gpu. Same show, same smell. ****.

My conclusion:
The PSU is fine and the mobo gets power. It never shows any error LED's. From what I gather it is likely then the mobo or cpu. I don't have cooling paste on hand to switch the CPU's / mobo's, but is that even necessary? Are there guru's out there that can definitively rule out one or the other based on the information above?


Any insights on the matter are much appreciated!

System specs:
Asus B250F mobo
7700K cpu
2060rtx gpu
16gb ram
A bunch of harddrives
 
Update:

As I opened up the PC just now to wipe the BIOS, I removed the videocard and saw something I have never seen before...

The metal plate with the output connectors has all colors of the rainbow. It's reminiscent of exhaust manifolds on cars. It's that discoloration you get when heat something intensely with, say, a blow torch.

I'm waiting now for a bit to try it without GPU. But has anybody ever seen such a thing happening to a videocard, or to any part in a PC for that matter?
 
Solved:

Waited a good 15 minutes before putting BIOS battery back in, left video card out this time and the darnest thing happend.

It booted.


Sorry for wasting your time, I'm now going to find a nice card to grace my ancient setup.

Have a great Sunday!
 
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