I'm honestly 50/50 on if this is actually a virus or something fucky with windows. Either way, a clean reinstall is probably your best bet. I'd recommend backing up your data and then reinstalling programs. Steam games I think you can just back up as well and then point steam back to that directory after your reinstall and have them but I'm not certain about that.
Back up your user file to some sort of external media, C:\Users\[your user account] and your steam library, make a windows 10 USB if you don't have one already with this link. If your computer came with windows 10 the product key is associated with your motherboard and you don't have to worry about reactivating windows. Otherwise you can pull your product key using a variety of programs, I've had good luck with produkey but haven't used it with Windows 10 so idk. Boot to the USB, reinstall and then move your shit back to where you got it up from. Moving any other program is a pain in the ass so I would just reinstall.
funhaver1998is it possible to do that whilst still having all the shit i have on my harddrive? i know theres an option for that, but will that still remove the virus
There is a built in option on that installer to just reinstall and keep all programs and data, however in my experience its glitchy so if you're going to try that make a backup anyways. And if this is some sort of malware then you run the risk of moving it over, but I'm not super worried about that happening. As a general rule just reinstalling programs/ games after windows is already reinstalled is going to make your life easier anyways.