I need some advice on a frustrating issue with my PC. For about a month now, it has been shutting down partially after 3 to 4 hours of use. The monitor loses signal, and while the keyboard and mouse stop responding, the fans and lights in the case remain on, which makes it seem like the system is frozen but still powered. The only way to turn it off is by switching off the PSU.
This problem has continued to worsen, and my PC no longer posts at all. To troubleshoot, I completely replaced the power supply with a new Tempest Radix VII AG 800S and the motherboard with a new Gigabyte B550 AORUS Elite V2 (the same model). I managed to get the new board to respond once using Q-flash Plus, but after a couple of hours, it shut down again, showing the same symptoms: no USB power, no video output, and it wouldn't boot.
With the new components, when the system is powered on, the fans and RGB lights come on, but there's still no USB power or video output. I've thoroughly checked the CPU for any bent or burnt pins, and the socket is clean. I confirmed that the CPU is correctly seated and that the EPS 8-pin is properly connected. When I turn the system on without the CPU, nothing happens, which makes me think the motherboard doesn't support that. However, with the CPU in, the fans and lights kick on right away, with no other functionality.
I've also tried removing the CMOS battery and using the clear CMOS jumper. My specifications are as follows:
- CPU: AMD Ryzen 7 5700G (using integrated GPU)
- Motherboard: Gigabyte B550 AORUS Elite V2 (both original and new)
- RAM: TeamGroup DDR4 16GB 3200MHz
- Case: Gamdias Aura GC1 Elite
- Keyboard: Logitech G413 TKL SE
2 Answers
Have you tried removing everything unnecessary from the motherboard and powering it on outside the case? It might help to eliminate any grounding issues. Once it’s up, you can start adding components one by one to see where the issue lies.
It might also be worth isolating the CPU and RAM to see if either is causing the problem. Testing the CPU separately can be tricky, though, since you need a working motherboard. Just a thought!
How can I test the CPU? Any specific methods or tools you recommend?
I'll give that a shot, thanks for the tip!