Hello , sorry about your problems. My name is Marco and I will do my best to help you.
Have you tried this software to scan and clean malicious files?
AdwCleaner to clean browser: https://www.malwarebytes.com/adwcleaner/
Malwarebytes to clean pc: https://malwarebytes.com/
_________________________________________________
Note: This is a non-Microsoft website. The page appears to be providing accurate, safe information. Watch out for ads on the site that may advertise products frequently classified as a PUP (Potentially Unwanted Products). Thoroughly research any product advertised on the site before you decide to download and install it.