ok about a week ago i started to get alot of pop ups and when u have internet open it open like 50 tabs and now when i got home my girlfriend seen a message about saying your computer has a virus and she closed it and it shut down the computer and now when you start the computer sometimes you cant click thing and u have to restart. i also play counter strike source and when im playing it just freezes in about 30 mins of playing and freezes the hole cumpter and i got a message saying theres issues with the computer and i tryed to fix them and i dont know how to fix this i was told there was a virus on my cumpter can anyone hlep me please