do I have some kind of computer virus?

[Lauryn]

Yes. It seems you have gotten a form of a virus. Try deleting some recent files, documents or programs you have downloaded from the internet as it may just be a demand of a program you have downloaded. Also, some sites can automatically download viruses to your computer, try and stay away from shady websites and don't click any adds you see at the side of Youtube or any other site.

If you have a anti-virus software try and see if it can detect anything and make it clear anything out that is a threat. If you don't have an anti-virus software I highly recommend you get one as it can really help save your computer from viruses.