Occasional system failures and colored output on screen
Occasional system failures and colored output on screen
Hello, I’m not sure what to do next. I’ve been facing problems with my PC for about a month or two, and it still isn’t working properly. There are a few issues: first, there are green lines cutting through the display (see video), and they stay until I turn off the machine and power it back on or unplug it. A simple restart doesn’t help. Second, the system crashes frequently—most recently I tried to stream to Discord while talking to friends, but the game crashed, so I stopped streaming and restarted again, only to have it crash once more. The last time it crashed completely, the whole PC failed, though some LEDs and fans started working but there’s no display. Initially, I thought it was a GPU problem because crashes only happen during games and the green lines appear. I replaced the GPU with one from Evga, but the same issue returned. I also tried different PCIe slots and new power cables, but nothing seems to fix it. If anyone has suggestions, that would be really helpful. Also, when the PC runs fine, I run stress tests on GPU and CPU, and they both pass (IMG_9152.mov).
After several attempts to restart the PC, which repeatedly failed without damage, I replaced two RAM sticks. The machine started up but crashed immediately after launching the desktop update. I then swapped the RAM for another set and booted normally until the Heaven benchmark began, crashing within five seconds. In another attempt, I disconnected the main monitor (since only that one shows green scan lines) and tried using a secondary monitor before rebooting. Slight GPU movement during reboot restored functionality, but launching Heaven still took about five seconds before crashing again. I removed the GPU from the motherboard, used compressed air, and ran the Heaven benchmark successfully this time—no automatic crashes. During testing, I heard unusual clicking sounds when starting Heaven, which I captured in a video. I have two M.2 SSDs and an 8th HDD, but no audible HDD noise was detected. Moving the GPU to the bottom PCIe slot resolved the problem so far. This seems to be a temporary fix; if anyone has suggestions, I’d really appreciate it!
These issues might stem from a faulty card, a loose connector, or a damaged cable. Do you have an alternative cable to test? The VGA debug light often indicates GPU problems, but since you replaced it, it’s unlikely the second GPU is the same issue. Which CPU model do you have? If it includes an integrated graphics unit, did you attempt to run without the GPU? Have you tried using a different power supply? More details about your hardware would be helpful. Nice setup!
Thanks for your reply. You've already tested several components and still face the same problem. I haven't checked the motherboard or storage yet, and I didn't use M.2 after the burner. Consider trying different options next.
I suggest following standard troubleshooting steps. Test each component individually on another machine. If the problem remains unresolved, the motherboard might be faulty. Clearing the CMOS memory could be a simple fix. Avoid upgrading the BIOS unless necessary, as your system was functioning properly before. These kinds of problems are difficult to identify and can be quite frustrating.