I'm having an issue with my PC where the display randomly drops out. Initially, I thought it was due to overheating, but I streamed HWMonitor to a friend during one of these incidents, and the computer actually froze. We didn't see any strange readings from the hardware at that time. I replaced my motherboard back in December 2025 because something burned out, but I can't remember the specifics.
I took my system to a repair shop, and they found several issues: instability in GPU output, irregularities in the power supply, inconsistent RAM seating affecting system initialization, and BIOS configuration problems that need resetting. They indicated that the root cause of the display issue could be related to a faulty power management IC (PMIC) on the motherboard, which distributes power to crucial components like the GPU and RAM. To fix it, they suggested component-level repairs to the PMIC and verifying stable power output, followed by full system testing to ensure stability for gaming.
My setup includes a Gigabyte Z390 motherboard, a GeForce RTX 2070 Super GPU, and a Thermaltake 750W power supply. I'm really hoping to get this sorted out! Any other opinions or insights would be greatly appreciated!
1 Answer
It sounds like the PMIC might indeed be an issue, but that’s unlikely. You might want to try a few things at home first. If possible, use a different power supply—maybe borrow one from a friend? Since they mentioned RAM issues, you could run the Windows Memory Diagnostic Tool. If it shows any errors or your PC crashes, try reseating the RAM sticks. If that doesn’t help, test each stick individually in different slots.
After that, stress test the GPU with some benchmarking tools. If you experience blue screens, freezes, or a black screen, then the GPU might be the culprit. Also, consider resetting your BIOS: unplug your PC, remove the CMOS battery, hold the power button for about 15 seconds, wait a bit, and then reinstall the battery. Access BIOS afterward and temporarily disable XMP to test for stability.
My gut feeling is that the power supply might be the main problem. If all else fails, you might want to try a different repair shop as well—those guys didn’t really seem helpful. Let me know what you try and how it turns out!
You could also check the Event Viewer in Windows under 'System' logs to see if there are any error codes that give more insight into the issue. That might help narrow down the problem further.