possible explanations: 1. You are using a hacked version of Windows or any of the antivirus software; 2. You did not patch your windows after reinstallation and got infected again (by visiting some malicious websites or opening some spam mail); 3. (very unlikely) you only "quick" formated your drive and there was a root-kit hidden in the system... Since you don't sound too savvy with computer stuff, I'd recommend you treat your IT support professional at work and ask him/her to help you set up a new Windows :p |