I had windows 8.1 and it said that windows 10 update is ready. I updated. Everything went fine. But there was a bug — right click (start menu is opened) took 20 seconds. I decided problem was video driver and downloaded nvidia windows 10 drivers.
I got black screen with cursor, didn't manage to get to login screen.
I tried "press ctrl, enter password and enter", but it didn't work.
But I have another windows on my hdd. How do I delete this drivers to reset default from another os? I mean, Can I boot up to another windows and delete drivers from hard disk?