I have a gtx 1660 super which turns off in the middle of doing something. I don't get any output to my monitor and even restarting doesn't solve the problem. It is quite random and very frustrating to say the least. The only solution I have now is to wait for an hour or so and restart - I'll get display output if I'm lucky.
When the gpu stops, the motherboard debug led doesn't light up. The led lights up only when I restart the PC.
Is there any way to check if the issue lies with the motherboard or the gpu without using another graphics card ?
(I dont have integrated graphics either, because I have an i5 10400f)
My motherboard is - MSI B460 M Pro VDH wifi
EDIT: Got a 4 month used rx 6600 for ~ $120 and now this problem no longer happens. it's not a substantial upgrade from my 1660 Super but an upgrade nonetheless.
I've been having a similar issue recently with the same card, though it wasn't taking an hour to get the display back and the problem ended up being something wrong with Steam. It was not releasing things from video memory and would end up crashing steam, crashing games running, and disconnecting the display somehow once the VRAM got filled and tried to do more. All I had to do to get the display back was unplug the HDMI cable and plug it back in again.
I just wiped my Steam install and reinstalled it. Haven't had any issues since.