EDIT: Solved by new PSU.
I have an old PC, now used basically as an office machine:
- CPU Intel dual-core E8200
- Mainboard MSI P35-Neo2
- GPU GeForce 8800GT
- HDD Seagate Barracuda 2TB
- RAM 4x 1GB DDR2
- PSU Fortron 500W
- OS Windows 10
Roughly a week ago it started to restart when playing any video or audio. At first, it played for about 10-15 min, after the restart, it lasted for just about 1-3 min. Since then, the issue gets systematically worse. Few days ago, it started to happen while browsing (no video or audio playing), now it randomly restarts even when completely idle (no application launched) and then it doesn't even completely boot and gets stuck in boot-loop. Only when I turn it off for a moment, it is able to boot completely, but it is all the same after few minutes. Also, it always restarts if I put it in sleep mode, that's the only way I can cause it on purpose.
There is no BSOD, no problem in the Event Viewer, just the inevitable event ID 41.
Two things happened at similar time as the first restart - it got infected by a bitcoin miner (already gone I believe) and I installed Realtek audio drivers (already uninstalled). I'm not really sure about the exact sequence of these actions.
I'm pretty sure it's not an overheating issue. The PC is on the ground in a cold room, I use Noctua fans for both the case and the CPU and I regularly clean the dust. I use Open Hardware Monitor all the time, the temperatures are fine.
I tried the following:
- ran antivirus, malwarebytes and others, no problems
- ran memtest86
- ran GPU stress test Furmark
- disabled auto restart
- disabled sleep mode
- switched SATA cables
- switched HDD
- removed all the RAM sticks one by one
- reseated GPU
- disabled audio in BIOS
- returned overclocked settings to default
- visually inspected the mainboard capacitors
The one and only thing which seemed to work was switching the power outlet/power cable. That was yesterday and when I did that, I was able to play video for about an hour without any issues, so I thought it's solved. Today, even in the "correct" outlet with a new power cable, the restarts are as bad as they ever were.
My question is: is there anything else I can try before I spend money on new stuff (new PSU is where I plan to start)?