Suddenly a website popped up on chrome tried to close it & there was a pop-up closed it again; then my firefox browser was refreshed & a NEW "hibro.txt" file was created on the desktop. Opened the txt file and they were addressing me & talking about how good of a gamer I am...
SO can you please explain HOW WAS the .txt file created by the hacker & HOW THE HELL did they know I'm a player of xyz game?? COULD THEY HAVE ACCESS of my files, folders and family pictures too? PLEASE HELP and KINDLY CLARIFY MY DOUBTS!
Shut down the computer and disconnect it from the internet, if you haven't already done so.
With another computer (or your phone) download Spybot (i think it's still considered one of the best free tools out there) and move it to your pc, let it run its scan, and check the results.
Oh, and like @Fazoo@lemmy.ml stated, this isn't foolproof, so if you want to be really sure, then follow their advice instead.
Can't say how this "hacker" got you with the provided information, but if he can put a file on your desktop, then he can likely see your files too. It wouldn't happen to be one of your friends pulling a fast one on you?