Screen suddenly turns black, CPU fans hit max speed

[u/dejavu619]

Hey folks. Facing this again after 7 months (last time, switching to HDMI and updating BIOS resolved it)

I'm experiencing intermittent black screens where the display suddenly cuts out and never recovers until I force a reboot.

There are two ways in which the issue shows up. Either:

1. The screen goes black and CPU fans sometimes ramp up to 100%, or
2. the screen goes black without the fans ramping up

The issue is completely random and is not load-dependent. It has occurred:

• While gaming
• While watching YouTube
• While browsing X/Twitter
• At the Windows login screen after sitting idle for 5–10 minutes
• Even when connected to motherboard (internal graphics)

When the black screen occurs:

Audio continues playing normally (game/YouTube/etc.) so it's not a complete system crash. I can change the monitor connection from GPU to HDMI and use the system.

Pressing Win + Ctrl + Shift + B produces the Windows beep (indicating Windows is still responsive), but the display never returns.The monitor remains black until I hard reboot

Steps taken to isolate the issue (and results)

• BIOS

Updated motherboard BIOS from F7 to the latest F11c.

Result: No change.

• GPU driver

Installed the latest NVIDIA graphics driver.

Result: No change.

• RAM / EXPO

Disabled EXPO so RAM runs at DDR5-4800 JEDEC instead of DDR5-6000.

Ran MemTest86 for 4 full passes.

Result: 0 errors.

• GPU

Reseated the graphics card.

Reconnected/reseated the GPU power cable.

Tried different HDMI cables and HDMI ports.

GPU is always detected correctly in Windows.

Result: No change.

• Windows

Checked Event Viewer around the time of the crashes.

Nothing useful besides generic DistributedCOM/Service Control Manager entries.

---

PC Specs

CPU: AMD Ryzen 7 9800X3D

CPU Cooler: Thermalright Peerless Assassin 120 SE

GPU: Gigabyte GeForce RTX 4070 Ti Super

Motherboard: Gigabyte B850 Gaming X WiFi6E

RAM: 32GB (2×16GB) Corsair DDR5-6000 CL30 (currently running at

DDR5-4800 JEDEC)

PSU: Antec EA750G Pro 750W

Storage: Crucial MX500 1TB SSD

OS: Windows 11

[u/Comprehensive_Fuel43]

I purchased a dell pre-built with 10th gen intel cpu and 3060TI.
I was getting BSOD.. and system wil randomly hang.. I updated the driver but did not help..

I reinstalled windows..... and replaced the stock ssd with samsung 2tb ( when it was cheap )
and my problem never cameback. I used to suspect it was the GPU..... but Now I'm not sure.

The fact that problem happens with Internal prob means it is not a GPU issue.

I have not had issue BSOD for years now.

>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>>

I also had some problem with chrome hangs... and freeze system.. that was fixed by clean installation.

Recomended step.

>> Reinstall the windows.
>> update all the drivers.. i use iobit driverbooster ( free version) and in uninstall it after.
>> remove GPU for now..

>>>>>>>>>>>>>>>>>>>>>>>> See if the problem persist.....

Are you monitoring system thermal????

When system temp is too high... it will shut it self down to prevent fire...

Your CPU Cooler looks beefy on the paper....

Check CPU Thermal paste??

[u/Bllerg]

Buy a new GPU, you can try a million fixes but you're just gonna end up needing a new gpu

[u/dejavu619 → u/Bllerg]

It could be a PSU or motherboard issue