download a program called Malwarbytes.
Malwarbytesboot your machine into safe mode and run malwarbytes.
do the full scan, be patient, it'll take a while.
it will remove any viruses it can find. restart the machine and update your OS.
best of luck!
Note: Don't have more than one anti-virus running on your machine at the same time. this will cause issues. anti-virus programs can occasionally show up as viruses to other AVPs.