When i try to open my task manager a error pops up that says task manager has been disabled. Is there any way to reenable it, or is it possible i have a virus?
If it's a simple problem with a system file you can run the system file checker utility if you have the Windows installation disk onhand. The utility will verify the condition of all essential files and repair/replace any found damaged or missing. You start that by typing "sfc /scannow" at the Run prompt.