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Today I had the stupidity to grant full access to a stranger on my TeamViewer. Don't ask me why, such a foolish thing to do.
So once done, he/she created an admin account on my laptop and blocked my access. Now I cannot delete any programs as it requires a password, neither my browsing history, cannot do anything really. Tried to re-install the operating system, but still the same - needs a password. He must have been into BIOS I guess. I have disconnected the laptop from the Internet, so hopefully won't be able to do any more harm. He had access over 2 hours until I found out what was going on and God knows what things have been done during this time.
Any suggestions what to do?
I have to access the created by him account somehow, delete it, delete TeamViewer and reinstall the OS. Would that be enough, though?
He probably knows my IP, all the logs, system info, registry etc., literally everything.
1Change all of your banking and email passwords immediately from another (uncompromised) machine. Even better call your bank (aassuming you have online internet banking or have used your credit/debit card online). – DavidPostill – 2015-06-29T16:47:50.727