since then my vista computer wont boot up properly!!!


i can get into the recovery centre and tried a start up recovery but that didn't fix it.
it asks me to select my operating system, but my system isn't shown in the box!!!
when i try and load in safe mode the load freezes on \System32\drivers\disk.sys
i have tried doing a chkdsk from the command prompt and that doesn't work either.
i have this hard drive on a old xp machine at the moment and am doing a scandisk and virus scan.
is there a way i could replace that driver while the drive is on another computer?
any help would be appricated.
thanks