Have a look a this utility and do a low level format http://hddguru.com/content/en/software/2006.04.12-HDD-Low-Level-Format-Tool/
>Yes
>
>>Did you format the floppy on a know clean machine, if so you still have a root kit active.
>>
>>>This does not work - The virus interupts the process each time I press enter
>>>
>>>>Hi,
>>>>1. Format a floppy and make it bootable.
>>>>2. Copy FDISK to the floppy.
>>>>3. boot the computer from the floppy.
>>>>4. Run FDISK /MBR six or seven times in quick succession, then remove the floppy and boot from the HDD.
>>>>
>>>>>I'm helping to remove an infection from a fellow's computer. I have removed two root kits and forteen trojans, but one MBR virus was lurking on the HD and I found it this morning. I don't know what it is called besides the very special names I have given it. The MBR virus will not let me reformat. Any ideas for complete removal of the thing?