Have you a Virus?
PC Repair Lab
Is the computer acting strangely, runs more slowly than normal, stops responding or locks up, crashes and restarts, strange pop-ups appear. The computer could be infected with a Virus to be sure a full system scan should be performed with a virus removal program and the removal of any found viruses, spyware, and adware. PC Repair Lab can scan your computer for viruses and spyware and offer advice on Anti Virus and Anti Spyware software