Hi folks,need a lil help here with my pc, with the following specifications- 40GIG HD,512 RAM and WIN XP. It was formatted recently and lately its been showing me that the HD is full whereas the documents i have are not even up to 512MB. I know its a virus attack. I have an updated version of AVG antivirus and ran a complete system scan. How can i be able to fix the system without necessary formatting it.