Recently (I believe after a windows10 update), my graphics card (Saphire HD 7870) stopped being detected by my computer. I turn it on and the screen remains black, the monitor doesn't respond. I am still able to use the PC through HDMI cable, connecting it to a TV. However it shows as if no GPU is connected, and my computer is using the onboard one.
It happpened the first time a few weeks ago, after the winodws 10 anniversary update, but I was able to make it work again by downloading the latest AMD driver.
This time, however, no solution seems to work. I tried everything: removing and reinserting the GPU, reseting bios, uninstall and reinstall the drivers, using the windows recovery tool, disabling the onboard graphics.
How I know the GPU is working? Well, the fans are working.
Windows 10 Pro 64-bit
Intel Core i5 3470 @ 3.20GHz
8,00GB Single-Channel DDR3 (9-9-9-24)
Gigabyte Technology Co. Ltd. B75M-D3H
LG FLATRON E2241
Thanks for your help.