Ughhhh! If your PC has ever been infected - or worse, if it's infected right now - you're probably groaning. Yes it's a pain, but the good news is: you can remove viruses yourself, for free. STEP 1: Back Up Documents, Photos and Videos. Save your important data to an external drive. Be sure to scan this drive and its contents after you remove the virus; you don't want to re-infect your computer after the clean-up. [Related: Five ways to help your PC help you] STEP 2: Reboot in Safe Mode You...