I “upgraded” to Windows 10 soon after the release and it was a horrible experience.
When it was done all it would literally do was sit there and flash the screen (it flashed on and off) with the spinning wheel most times. I couldn’t even click on the start menu to shut it off. I had to use CTRl ALt DEL.
I let it sit for an hour in that confused state to see if it would update with a patch of some sort and nothing. Just kept flashing. It was unusable.
I ended up wiping that and going back to Windows 7. I haven’t tried it since.
I read before the upgrade that NVIDIA video cards and associated drivers had comparablity issues with WIN 10. So I knew about that possibility. But I only have one monitor (not two or more which most of the issues revolved around) and I updated to the latest driver for my card before upgrading Windows. I guess it was still an issue but the bit of post update research I did (while it sat flashing for an hour) didn’t address my issue at all.
This is a perfect example of why I hate PC’s and the Windows OS. Just like all past OSes (with XP and Windows 7 being somewhat excepted) unless everything is installed perfectly and configured correctly they don’t work at all or very limited. I only went back to the PC when it became clear to me that there simply aren’t any good gaming video cards on Mac’s.
From now on though I will sacrifice some video quality for computer reliability. And not “upgrade” again the Windows until at least this November if not ever.
Right click on Start button> Run
Type in: sfc /scannow
Windows will repair itself. I had to do this when several problems came when I did an upgrade. One item was not able to left click on the Start button.
Most were fixed but it seemed sluggish so I did a format during the install and all was well. I had backed up my files prior to the upgrade.