I have a similar problem to this thread posted by Pradeka https://www.techspot.com/vb/topic62639.html There is a notification ballon saying 'Critical System Error' and when I click it, it says 'System detected virus activities. They may cause critical system failure. Please use antimalware software to clean and protect your system from parasite programs. Click this balloon to get all available software'. I downloaded the trial version of AVG anti-spyware and after scanning, it found alot of trojan files and cookies. I followed the recommended actions and restarted but the notification ballon still exists. Please tell me what I need to do in order to get rid of this problem.