I had an issue last week and was a good time to test the backups I'm making with Veeam Endpoint Backup free since 6 months now.
I used the Recovery USB I created with the application and I was able to boot OK but at some point, I get the green screen with all icons but I'm unable to perform any action. Mouse / Keyboard don't work.
I have an Optiplex 990 with Core i7, 16GB ram, 512GB ssd, 2 monitors, Wireless Mouse and Keyboard (Logitech).
Reboot 3 times with the same result.