NVidia card no longer detected despite working previously.

[DefconWorld]

I've had my graphics card for months, it worked without a hitch. Then my computer went without use, and stayed off, for 3 months. I turn it on and suddenly, my graphics card is no longer detected. I can't launch the Battle.net desktop app as it says I need to upgrade my drivers or get a new card. Tried updating my drivers through GeForce Experience, which has worked, and that says it can't detect anything either. I unplugged my PC, and opened it, everything is attached and nothing is cracked or broken. I'm absolutely clueless, I can't update my drivers, I can't detect a card. Does anyone have any idea? any help would be greatly appreciated.

 

[rvcjew]

So Geforce Experience says you do not have a nvidia gpu installed? Have you tried re-seating the card (take it out and put it back in sometimes the pins get shifted around)?

 

[Faladu]

I would check the BIOS settings, see if it's set to use on-board video.

If the CMOS battery croaked/hiccuped while 'OFF' duty you'd be reset to defaults, thus on-board video and doesn't know you have a video card, if that motherboard BIOS works that way (common).