I don't know if its a virus or not. It is odd
do you get the motherboard flash screen?
do you have a win 10 installer? handy boot drive - On another PC, download the
Windows 10 media creation tool and use it to make a win 10 installer on USB
If you can access bios, see if you can boot off USB
you could boot off USB and use File explorer to see if all her stuff is okay, Also use to copy anything off PC -
boot from installer
on screen after languages, choose repair this pc, not install.
choose troubleshoot
choose advanced
choose command prompt
type
notepad and press enter
in notepad, select file>open
Use file explorer to copy any files you need to save to USB or hdd