[SOLVED] Random reboots lead to reinstall, now black screen and no BIOS

Dec 8, 2018
2
0
10
Hello Toms Hardware community. I don't post questions on forums often, this is how you know I'm at my wit's end- any help would be appreciated.

Summary of my problem:

Custom desktop, I've had it for 3 years. No had problems until now. Random rebooting occurs when playing video games. Not long periods of time- the computer would repeatedly black screen as soon as a match was found in Fortnite. I got maybe an hour of Artifact in before it rebooted as well.

I downloaded and monitored HWmonitor, the CPU and GPU temps were fine when the reboots would occur (45C and maybe 75C respectively). I did a self-tester on the PSU and the fans kicked up right away. Ran MemTest86 on both ram sticks individually and showed no errors. Tried Prime95 stress test and it did not crash. Used furmark stress test and no reboot during that either. The problem has escalated at this point, I'll try to do a quick summary.

The other day I went and got an external hard drive to backup my data, and thinking I'd try one last fix I reinstalled my graphics drivers and launched a game of Fortnite. The computer crashed and didn't come back up, saying to use a proper boot device (I guess the MBR got corrupted on reboot). I used a Fedora live USB to boot off of and got all my data off onto the external thankfully. I then reinstalled Windows 10, updated my graphics drivers, and tested out if perhaps it was an OS issue hoping the reinstall would help but the reboot issue persisted.

Trying to isolate which hardware device it is, I took out my GPU and plugged an HDMI cable into my motherboard to use integrated graphics. Now, I'm not getting any output from the computer. I can't launch into BIOS, it's a black screen on startup (fans are running and the lights are on). I reset CMOS and continued to use the integrated graphics, still no output or BIOS. I put my GPU back in, and it's not sending output through that either.

I have no idea if this black screen issue is related to the reboot one or there's a step I'm missing just to get BIOS working again. Any help in getting my output back up so I can start booting into an OS again would be greatly appreciated, or any advice on the reboots would help as well. Hardware:

EVGA GEFORCE GTX 980 TI
EVGA Supernova 650 GS
Z97-G45 Gaming MSI motherboard
Intel Core i5-4590, 4 cores 3.30ghz
USing 2 500GB SSD 850 EVO
 
Solution
Just in case someone stumbles across similar symptoms, it ended up being the GPU's VRAM being faulty. Stress testing the cpu, and even furmark didn't show any problems as furmark was more attuned to be a power stress test and less of a VRAM stress test. Committing around 60% of the VRAM would cause the system to reboot and throw event ID 41 in the event logs (although 41 can be caused by a lot of things). Hope that helps someone out there.

Video card is a few months out of warranty (dang). That's life hah
Dec 8, 2018
2
0
10
Just in case someone stumbles across similar symptoms, it ended up being the GPU's VRAM being faulty. Stress testing the cpu, and even furmark didn't show any problems as furmark was more attuned to be a power stress test and less of a VRAM stress test. Committing around 60% of the VRAM would cause the system to reboot and throw event ID 41 in the event logs (although 41 can be caused by a lot of things). Hope that helps someone out there.

Video card is a few months out of warranty (dang). That's life hah
 
Solution

TRENDING THREADS