|I would suspect the OS is borked. It is not always possible to remove virus's. |
Might try an ultimate boot cd to use to run diags such as memtest and hard drive tests.
Could boot to any live cd and see how it works.
Consider a clean install from XP or OEM disks. Use best practices to avoid virus's and sweep all usb and cd disks for any virus.
I support the 'Everybody Draw Mohammed Day'. A religion doesn't deny my freedom.