It's brand new with a Windows 7 and I have no bad sites. When I play mmorpgs it drags my mouse in all directions every 15 minutes. I just put up a antivirus program up. Maybe that's why. I have a bad habit of misspelling websites that could be why. I was playing neopets and page just went to another website and I closed it right away. I had this computer working just recently. I didn't reinstall the Operating system. It's a brand new computer.