|First to try is to return to a previous restoration point.|
Second thing I would recommend is to start your computer in safe mode. (you can start it in safe mode with networking) after this try to download malware bytes.
if you can download malware bytes, I would recommend waiting to install it until you reboot in regular safe mode. then run a "full scan" this will take a while.
if you succeed in this plan, post the malware log up on here, so I can see what infected you. if not let me know.