Morning Pwoodyx. I would guess that you might have been hit with a virus, since the prompt you're getting is pretty similar to what happens when you do.
I would suggest moving this topic to the "Am I infected" forum and post the required logs/reports.
And, of course, give as much information as possible about your O/S, your computer, etc. More information is always better.
Here's a quick link to further (better) explain what I mean:
And here's the link to get the process started:
It seems like a lot of reading, but if you've been here any amount of time, you know that the BC community is pretty good at getting these Bleepin' Computers back up and running.
And, in case you haven't, I would also try all the obvious; updating and running complete scans with any and all Antispyware / AntiMalware and AV software you've already got on your machine. In the event of any of these apps failing, any pop ups or messages can also be helpful to the staff that will be helping you clean your machine.