at random times my pc goes 100% fan speed and full black screen.

For any future readers out there... I had similar problems as the OP:Screen goes black, fans rev high, still hear sound for a little bit, then need to do the hard rest. Crashes occurred mostly while gaming but seemingly at completely random intervals. Could be two minutes or two hours into a game. Also, power on button would work intermittently. Would often need to flip off the power switch on the PSU, drain the power, then flip back on before the power button would work again.Build: Darkhero VIII MB, 5900x, 4090 Suprim Liquid, 850w PSUBased on the advice of many forums I stumbled onto, things I tried include:

• Upgrading PSU to 1000w - didn't help
• Bought one of those L bend psu adapters for my GPU - didn't help
• Bought a TPM module - didn't help
• Bought new ram - didn't help
• Various cmds like sfc /scannow, etc. Sometimes it would find and repair errors but didn't help with problem
• Removed drivers via DDU, installed older ones I thought might be more stable - Kinda helped?
• Updated all the chipset drivers. BIOS was already current. - didn't help
• Messed with a bunch of BIOS settings like ERP, performance settings, overclocking, etc. - didn't help
• Moved save location of games I was playng to my M2 windows main drive - didn't help
• Reinstalled Windows 11 - This actually made it worse somewhat. Instead of Black screen, high fan rev, I got BSOD with "Critical Process has died" error almost immediately after starting Diablo IV. Despite crash/error posting, would never produce a minidump file. WHAT DID HELP - Making sure my GPU's 4x8 12vhpwr pin connector actually had 4 independent cables (each plugged into their own port on the PSU) powering it. Originally, I believe I was using three cables with one of the heads splitting into two 8-pin connectors. Haven't had any problems since. Hope this helps someone in the future! Good luck!

I have wrestled with this issue for a few weeks. My specs are similar and I tried many things (switching from Windows 10 to 11, then back again, then back again) and had the same problems. Here are the things I tried and the results:

1. Updated the driver with Windows Update (failed): once I did this, One display came up, the other didn't, crashed when I clicked on an app occasionally. I reinstalled the manufacturer's graphic app (in my case, the Adrenalin app version 24 with driver 31.0) When I updated, it really threw off the settings and caused issues so I went back to the version 24. Wouldn't even detect plug-and-play.
2. Uninstalled Monitoring Apps: (failed): had Open Hardware Monitor running to see if I had a temp problem...never went over 60C and still occasionally crashed.
3. Swapped out the power supply (so far so good): I don't believe this was the issue, but I went from a new Rosewill Photon 1200W supply to a Corsair RM 1000X. So far so good but I think the main issue is:
4. Separate PCIe connections: I had researched GPU connections and I had the card connected with the SAME cable that had a split for both GPU ports (2 8-port connections to the same PCIe port on the power supply). Since the power supply is modular, I connected two separate PCIe cables, one to each 8-port connection. What I found out was higher-end GPU cards today using one split connector to the PSU may be closely or borderline overpowering the limit of the individual cable. My crashes always showed "kernel-power 41" critical errors in the Event Viewer. I have ALL new parts and I doubt that RAM, GPU or PSU is the issue.

I determined that the driver was the main issue for display screw-ups but I believe the sudden display outage, with the system staying on and the GPU fans running at top speed was a combo of power and driver. I am now using the manufacturer's driver for the card and separated the connections from the PSU with two separate PCIe cables (being that it is modular) to each of the card's 8-pin set of connections and haven't had an issue yet.

Hm gotta check again its super wierd lemme detail you . Like lets say I start the PC ok maybe ima play some terraria or something , no issues so far , i turn off the PC then next day i wanna do my project on google docs and then boom randomly out of nowhere black screen fans ramp up . This issue started happening on a similar scenario when i was in a discord call with my friend while doing my project on google documents with like 2 chrome tabs opened , then it kept happening again and again at random intervals . Then i noted something so lets say it happened one time , i restart the computer then it again happens but faster than before then again then again and finally it starts happening as soon as the BIOS logo thing is gone

Hi I'm also having the issue with GTX 1650 from ASUS and it happened alot when I was either booting up to windows or idle on desktop , and yes when I check a window to show errors or critical events it shows some display driver thing that crashed

Hello Jorell,

I am Jaspreet Singh.

One of the times this happens is when windows is installing the display driver in the background. Sometimes windows will revert back the display driver to a previous one when you manually update it causing a black screen and gpu fans ramping up. Manually reverting this change again triggers the update once again. This can be confirmed if there is a display driver update in the drivers update section in windows update history which coincides with the time the black screen occurred.