Looks like these PC issues seem connected to PSU problems. It's getting tough to figure out what to do.
Looks like these PC issues seem connected to PSU problems. It's getting tough to figure out what to do.
I recently assembled a brand new computer last year. It was my first completely self-built unit. Motherboard: Gigabyte B550M Aorus Pro-P BIOS Date: 09/18/20 12:03:43 Ver: 05.00011 (type: BIOS) CPU: AMD Ryzen 5 5600X (not overclocked) RAM: 4x8GB DDR4 at 2400MHz [HyperX Predator 2x8GB DDR4 3200MHz (currently 2400MHz without XMP) + Kingston Fury Renegade 2x8GB DDR4 3200MHz (currently 2400MHz without XMP) Fury Renegade is merely a rebrand after Kingston transferred the HayperX line, yet the items are identical] GPU: Gainward GTX 970 with 4GBVRAM PSU: EVGA Supernova 750GT (previously Gigabyte P750GM which caused frequent crashes and I replaced it after hearing about its poor reputation) Disks: 250GB SATA SSD (boot drive) + 2x 1TB M.2 NVME SSD + 2TB HDD System: Windows 10 Home 64-bit The problem I’m encountering now is, that occasionally when I run an app, game, or simply open a program, my PC unexpectedly crashes. It manifests as the screen fading out, the tower ceasing to hum, and fans stopping abruptly—as if there was a power cut. No error codes appear, no blue screens, nothing. When I press the boot button, the machine restarts instantly, seemingly unaffected. This pattern strongly suggests the PSU is tripping a circuit breaker for some reason—possibly due to overcurrent protection. The interesting fact is these crashes occur even when I don’t run heavy CPU or GPU tasks, which should be the most demanding. There’s also no indication of overheating; the PC starts normally and resumes immediately afterward. This behavior makes sense if the PSU has weak capacity for the current load. I recall planning to upgrade to a more powerful graphics card then, so the 750W PSU should have plenty of headroom. Yet, I still lose power when it’s not functioning at full capacity. Recently, after installing a new game (Blasphemous), which isn’t particularly demanding, my PC would crash instantly upon launching. Previously, it handled 2D side-scrolling titles fine. But now, even light games trigger failures. I suspect this might be due to the RAM generating spikes when memory is accessed simultaneously, possibly overloading the PSU’s protection circuit. Interestingly, the open hardware monitor didn’t reveal anything unusual either. I’m curious if my configuration inadvertently causes excessive power draw by default. I disabled XMP for RAM, which lowered its speed from 3200MHz to 2400MHz (or possibly 3000MHz in the XMP profile), and it resolved the crash issue for that game. Still, I remain cautious. Now, after another game (Mount & Blade 2: Bannerlord) crashed immediately after launching, even though it worked well before. On restarting, it would crash again within minutes, with Windows Event Viewer showing only a power loss. This pattern repeats across different applications and tasks—no specific error, no freeze, no crash report. I’d probably file a support ticket on the game site instead of sharing this here. Still, it’s worth noting that some games don’t support XMP, so I’m willing to tolerate that temporarily.
The EVGA power supply appears capable of meeting those power needs. Did you experience any crashes or unexpected shutdowns while using the Gigabyte PSU? Understanding its history might help identify potential hardware problems. ***Edit*** You mentioned previous issues with the Gigabyte PSU, so it could be involved, though not definitively. I’d also consider reinserting the GPU and verifying all power connections. I recall similar problems after cleaning my system and reseating the GPU—fixing that resolved the issue. While temperatures seem normal, gaming can strain cooling under load, even without a high-temperature CPU. Consider using benchmarking tools to monitor temperatures and power fluctuations. As a next step, could you share details about your cooler, case, and fan configuration? Temperatures might remain stable until they’re pushed too hard. A fresh installation could also be beneficial if everything checks out otherwise.
by reseating do you mean just taking it out and putting it back in again and making sure it's all propperly set? The CPU has a bequiet! Pure Rock2 150W TDP cooler ( i had a 2nd unsued bequiet! cpu fan lying around so now it has 1 fan at the front and at the back instead of just one fan, donno if that makes alot of difference tho but should be fine either way). Then i have 1x120mm fan at the back , 2x140mm fans at the top and 2x120mm fans at the front of the case as well as the psu having the fan set up to blow air out of the case instead of being it's own loop. In general the case has quite alot of openings as well. Dust is also not an issue for now. I'll see what i can find benchmark whise. Reformating the whole thing will only be my last resort if all else fails..