Computer Behaving Oddly After Accessing A Google Sheets Document

[2SidedPolygon]

Hi, my mom's computer started behaving oddly after accessing a Sheet from her Google Drive. When the Sheet is opened, it will say "Working..." up top for a few seconds, then proceeds to scroll all the way to the right. Attempts to scroll back lead to it just scrolling right again. After this, the entire computer started behaving oddly, with the time and date at the lock screen before going to enter the password moving up and down rapidly, and boxes that open when clicked to reveal several options not opening. I've run a quick scan with Malwarebytes and it didn't detect anything, and am running a full scan now. Another thing to note is that the "Service Host: Cryptographic Service" appeared in task manager where I don't believe it was before. Any idea of what's going on would be appreciated. Thanks.

[Amazonsucks]

Did you have rootkit scanning on? Do a threat scan, not hyper scan, with rootkit detection and see if it picks anything up.

[2SidedPolygon]

1 minute ago, Amazonsucks said:

Did you have rootkit scanning on? Do a threat scan, not hyper scan, with rootkit detection and see if it picks anything up.

I fixed the issue. Just had to reinstall the mice drivers.