Yesterday my system shut off because a box was blocking the PSU exhaust, so it overheated. I took the side off and let everything cool down, and got some big wads of dust out of the bottom of the case. Now my GPU fan won't run. Radeon software shows 0 RPM, and a visual check shows that it's not moving. Nothing on the card looks burned or broken. I uninstalled and reinstalled the software, took the card out and put it back in twice, still not working. This is a pre-built low end "gaming" desktop. I don't overclock or use any manual tuning. Does this mean that the fan is just toast and I need to get a new one? The card works fine, except if I do any gaming it heats up to 90 degrees within minutes.
Oy that's what I was afraid of. Guess I'll have go without a computer for a
while. No money to get a replacement. The card is from OEM (HP) because this is a prebuilt computer, so I can't get a replacement fan from them.
You will be fine using the computer without the fan working for general web browsing watching videos etc.
But gaming is likely to cause it to shut down.
You can't damage a GPU by overheating, it will just downclock then shutdown to save itself.