mega tech support / Scam company
They are phishing websites and when selected a warning message and alarm sounds about a Trojan on your computer and to call their number immediately or your computer will be damaged. VERY convincing that there is a genuine problem with the PC and they can fix if you pay $200 and they will load the fix there and then. I did this. Computer is fine but lost $200. Likely a scam through India. Don't do it! Just turn your computer off and remove the battery. Call someone you know that is a genuine IT Support Service and have them service your computer.