What's the diagnosis?

Question

Windows

All usb disconnected the problem remains, used the keystroke check - empty
In the browser everything is OK, the problem is when opening the start menu and in Vova the character runs away into a corner and the cursor disappears. Computer restarted. The problem arose out of the blue, I don’t even know where to start.
https://gyazo.com/9599c1d6a4ac6450fcbe75dda7fed34e

Answer 1

Malwarebytes and for a full check, remove Autohotkey and if there are bots for WOW - also demolish them)))

Answer 2

Did you update drivers or Windows? Have you tried connecting the mouse to a different port?