I opened an attachment on an email and my computer totally freaked out and then all my icons were missing besides IE. I tried to run AVG scan but it closed partway through the scan. Then I downloaded AVG internet security 2012 trial version and ran that and it ran. It didn't discover anything. My mom was able to unhide all my icons and all my data seems to be intact. I have run through all the prescribed steps to remove virus/malware and have all the log files saved. How do I know if everything is clean? I plan to remove all my data and wipe my system, but I don't want to transfer any virus or malware with my data.