Whenever posting questions on these forums, please give us as much information as possible about your computer. Depending on your issue, we might need the operating system, processor speed, amount of RAM installed, brand name of the computer, (if there is one), and any EXACT error messages you are receiving, and any other information you think might be helpful. (Maybe your antivirus program, whether it's current, and have you run any antispyware removal tools?) The more information you give us, the better informed our answer will be.

Hope this helps and let us know more.