It's happened to me several times before: after a power outage (I need to get a UPS, I know) my display would suddenly appear rotataed by 90 degrees, like, lying on one side. I downloaded all the drivers for my motherboard - it's onboard graphics (my mobo is: ECS G31T-M7). Would reinstall my Display driver when this would happen. It would fix the problem, until today. Now, during the driver installation I'm just getting the message: "an unknown error has occured, the program will now close". Tried removing and reinstalling (after that failed installation something seemed to get installed anyway, so I needed to remove that), re downloading the driver - no use. Ran MalwareBytes an an AV scan - found nothing.
I am wondering - other than reinstalling Windows, whar can I do to fix that?