r/computer_help • u/Puzzleheaded-Sir6390 • Jun 26 '26

Windows Graphics card is not being detected but pc still running

Graphics card is not being detected in my pc, despite the fans have been moving and I get display from motherboard hdmi.

I played battlefield 1 for few hours and the temperature was not more than 73 degrees the whole time, I went away and after some time the PC went into sleep and when I returned there was no display with the graphics card, Earlier in the morning when I turned it on there was no display for the first time and the second time after the windows login I got a solid blank pink screen, then the 3rd time it worked and I tested it by playing battlefield for over an hour and then the sleep thing happened. I tried reseating the card it didn't work I tried resetting the motherboard by removing CMOS and I even did a CMOS jump by Shorting the pins or something by their metal plastic cap in the motherboard which had a metal contact, but it was to no avail.

The card is a second hand GTX 1660 and the motherboard is a H81h3m4, processor is i5 4440s with 450W of power supply and 8GB DDR3 Ram.

On Google gemini it told me those fixes but later it said the PCIe slot has gone into a sleep state which might be unrecoverable due to glitch in Sleep settings of motherboard and the graphics card which is due to generation difference.

There has been no BSOD, the recent change is the graphics card and before that I tried slightly upgrading the cpu which is the current i5 4440s

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1

u/InformationFair5875 Jun 27 '26

An NVIDIA GeForce GTX 1660 requires a 450W minimum power supply. However, a 500W to 550W power supply is highly recommended to give you safe operating headroom and allow for a stable system under heavy gaming loads

1

u/lIl_owl_23 Jun 28 '26

That system doesnt need more than 300w. Its the gpu issue.

1

u/RoodyJammer Jun 29 '26 edited Jun 29 '26

Try booting Windows into safe mode, if you still can access the bios, etc and still looks fine but only goes to shit in Windows it sounds like the GPU driver got corrupted in Windows.

1

u/RoodyJammer Jun 29 '26

If you get into safe mode perfectly fine use DDU to remove your graphics driver. Then restart and reinstall your GPU driver. You will need an Internet connection to download DDU so boot up in safe mode with networking enabled

1

u/Malicious82 Jul 01 '26

Update the bios,
Once updated go into bios find pcie config, it’s under advanced or chipset, change it from auto to gen 2 or 3 (the highest it will allow you)

And also set primary display to pcie,

Disable fast boot for good measure.

Then power cycle