PC black screen under load
PC black screen under load
Hello, here are the details of your setup:
Motherboard - Asus Rog Strix b650e-f
CPU - Ryzen 9 7900X
GPU - EVGA Rtx 3070
RAM - DDR5 2x16gb Corsair Dominator Platinum at 6000mhz
PSU - NZXT C1200 Gold
OS - Windows 11
My problem is that the PC black screens during underload, which makes the fans speed up and forces me to keep pressing the power button to shut it down before turning it back on.
I want to give some background: about two months ago I upgraded to an AM5 motherboard with a CPU and RAM, using a Corsair RM850e power supply. At that time, I experienced this issue while playing games like Call of Duty or Cyberpunk—within minutes. After several days of troubleshooting, I used software called OCCT, which suggested the PSU was failing or unable to handle the load. Testing separately confirmed it worked, but running the "Power" test caused immediate crashes or after just a couple seconds.
I switched to a new NZXT C1200 power supply and ran the Power test for a minute; everything was normal. Recently, I installed Overwatch and noticed it would briefly cause fans to increase before stopping, lasting 30–60 seconds. When I launched the game, my fans spiked slightly, then the screen went black, requiring a reboot. After that, the PC only showed black screens again with the new PSU.
On Overwatch, the blue screen appeared. With the old RM850e PSU, the first crash was a BSOD during Cyberpunk, but later crashes were just monitors going black and needing a restart. Now with the newer PSU, the crashes are only after reboots. I’m wondering if this is significant or if it’s just bad luck.
Additionally, I can enable eco mode on the CPU, which uses less power, and the PC remains stable even during OCCT tests. The performance drop is minimal, but I want optimal speed and confidence.
Also, the Event Viewer shows the system rebooted without a clean shutdown, which could indicate a crash or power loss. Any suggestions on what might be causing this? Thanks in advance.
Hello there! Are you looking for the BIOS version for your motherboard? I recently upgraded to AM5 with Mobo, CPU, and RAM about two months ago. Have you reinstalled your operating system?
BIOS Ver. 3014
And indeed, I restored my operating system again.
A short clip demonstrates the rapid occurrence. It also displays PSU 12v, 5v, and 3.3v options on the right side. The 12v voltage drops to 11.3v and it stopped working instantly. Watch: https://youtu.be/U-9c5tC7k3E
there are a few testers for power supplies, but if you're unsure, just wait and look for someone nearby who knows electronics to check your motherboard and power supply.
Last night I performed the power test and it actually functioned for about 30 seconds before stopping. Once the screens went dark, the music continued, so the PC remained active but the displays turned off. Another time the system restarted by itself without any intervention. It seems quite unpredictable.
I also ran the test using the CPU in eco mode, which consumes around 100w compared to the usual 220w. This prevents crashes, but I checked the PSU voltages with OCCT and HWinfo, and everything appeared consistent.
I understand software isn't the best method for analyzing this, but it might still offer some clues.
Here are the screenshots:
https://prnt.sc/BqMuob5YOTMG
Screenshot
Captured with Lightshot
prnt.sc
https://prnt.sc/r5DeuyEN4rR5
Screenshot
Captured with Lightshot
prnt.sc
Yesterday, while testing for 30 seconds without eco mode enabled, I noticed the voltage rose to 11.200 volts.
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