The issue with your grandma's PC is that it can't start Windows.
The issue with your grandma's PC is that it can't start Windows.
Her grandma's computer won't start Windows even though she can turn it on and log in normally. After logging in, the screen goes black. She ran some checks and everything looked okay. She didn't install, remove, or modify any software. She took the PC down for a day and now it shows up as a black screen when she tries to log in again.