Pc taken over by viruses and malware

Bree said:

Yes - the Anniversary Update.

Your build 10586 is Windows 10 version 1511. The built-in Defender Offline option came in with the AU build, 14393 - Windows 10 version 1607.

But Defender Offline has been available for download since Windows 7...
https://support.microsoft.com/en-gb/...-protect-my-pc
Follow the instructions for Windows 7 in the above link to make a bootable USB/CD that will run Defender Offline.

Edit: I have tried it and it works equally well under Windows 10 (in fact it came with more up to date definitions than I currently have on my PC).

The reason that my os is not up to date is because I got stuck on the "Cumulative Update for Windows 10 Version 1511 for x64-based Systems (KB3163018) - Error 0x8007045b". But anyway, I made a bootle usb drive and did a full scan and nothing was found ( just a maya keygen from when I took a 3d moddeling class). So maybe I'm clean?

Should I use the windows' reset tool just to be sure or is it unnecessary?

What makes me suspicious is that when I boot my computer I'm getting a normal load screen (blue logo and white dots running in circles), then it disappears and then a new loading screen in a lower resolution pops up and then the password screen apears. I don't recall this low res loading screen before the incident. Maybe I'm beeing paranoid, but I don't know how these boot viruses work.

This is what happen when you let someone use your PC. Hope this situation teach you a big lesson.

I would wipe all drives and do a clean install if this was my PC. Ensure you back up your data and that is free from infections by virus checking the data before backing up.

I decided to reset the windows. It is not showing any signs of malware or viruses. Now I'm uploading to one drive my photos, videos and documents and then will format the hdd completely.