Mouse being controlled by a script or virus

Des123

Distinguished
Mar 5, 2011
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My mouse randomly moves and clicks around the screen at random times.
I switched off the internet-> still happening.
unplugged my mouse and its still moving around
Scanned with AVG, MalwareBytes and both come up without any results. I want to try everything before formatting as a last resort. Any help would be greatly appreciated
 
Install a professional antivirus. Don't use free antivirus downloaded from the internet, avoid all "free" offers.
Remove the "free" applications before installing real security. Restart.
Install, register, update the real antivirus, then scan the entire computer.
The highly rated antivirus includes NORTON.
Many infected computers seen this year had malware bytes and avast, AVG installed.