Spotify offers many promotion activities to attract new users. Get 3-month Spotify Premium Free Trial On PC/Mac. Then, scammers ask for payment to get a purported support service. Usually, the warning message gives you a phone number and tricks you into a call for help. The warning is not real but only a tech support scam. Get rid of junk files, protect your privacy, clean your registry, undelete files, and more. You can also run antivirus software like AVG, Avast, Avria or Kaspersky, etc.
If you can't get into Windows to run a virus scan, you'll need to create a recovery tool that you can use to boot up your computer.
Scroll through the 'Files to delete' list, and choose Temporary files. Click it and choose Disk Cleanup from the drop-down menu.