GPU: Radeon HD 7770
OS: Win10 x64
Driver: Adrenalin Edition 18.2.1
So, after a year of not using my desktop computer, because some OS fault damaged the Windows Installation beyond repair, I recently re-installed windows 10. The GPU, after installing the drivers worked fine, but the fan was not spinning. Even during a stress test, in which the GPU reached 90*C, no spinning. This is definitely not the intended cooling behavior.
The drivers where installed using the auto-driver-detect utility. Oddly, my GPU was being detected as an R7 200.
What I tried:
I tried manually setting the GPU Fan speed. These are my results:
0% - 75%: nothing, no spinning
75% - 100%: fan is spinning at what seems to be the apropriate speed for the setting.
Turning the speed back down, from a running state (75%-100%) keeps the Fan spinning till about 70%, after which the Fan just stops.
Fan works with just fine, responses to pwr input (only tried grounding it)
The Fan run at high speed the entire time the system was operational
The speed control of the GPU must be faulty. This could either be a hardware bug, or a software one.
Is my conclusion right? Did I miss something? How can I fix this? Please help!