Hi I'm running Windows 7 Ultimate 64.I rarely get viruses so I really have no clue what's going on. Basically everything is super slow, especially the internet. It changed my homepage and new tab to yahoo, and I'm getting a pop up whenever I click on something. The system also got pretty hot. Anyway I have Kaspersky on my pc and when I tried to run it it did nothing. I went to reinstall it and it's like there's no program, just the icon on the desktop. So I went to reinstall it and it said it wasn't compatible with this pc. Anyway I don't even know where to start with this thing.