as a second scan option spybot (search & destroy) can help with deep scan for trojans/malware
If you have lifelock I think Norton is included

external backup of the data would be recommended and a fresh install of the OS (if possible) -

I think advast has a try it for free option.

And once stuff looks clean - run the system file checker option - it will detect file modifications in Windows 10 an restore official copies back.

https://support.microsoft.com/en-us/...3-966e85d4094e


if you have no a/v software installed, go with defender (Microsoft free) it is not a bad product once you get it configured.