homerbigal

Hi all

I was wondering if anyone out there would be able to help me. my computer seems to have a virus that i can't get rid of. i have tried to reinstall windows xp but my computer will not run anything in the cd drive. i can open up a disc that is in my cd drive to see what is on the disk but if i try to run anything nothing happens. this means that when i put my xp in the drive and boot up with the cd drive set in the bios first, it does not find anything in the drive. i have tried to format the hard drive using the command prompt but am having problems with that as well.i tried typing in format c: /fs:ntfs/q/c/x but it came back with all ntfs boot sectors are unreadable. i have also tried format c: /fs/ntfs but it says it cannot run because the volume is in use by another process and would i like to force a dismount, but when i put y, it says cannot lock the drive the volume is still in use.
please could someone give me some advice on what to do to get my computer running properly again before i throw my computer out of the window.

many thanks, homerbigal