hello im helping a friend fix her computer and could use some help. upon startup i get the above error, ive tried many different things found on google and nothing seems to help. im running xp sp3 on a dell vastro 200, can give more info if needed any help would be very appreciated thank you all

to laurence- that was my first thought but this isnt the case...ive checked the boot device order HDD is set to one. ive tried just about every "simple fix" idea and no results. im thinking it may be a hardware issue but would like to know forsure before i buy a new HDD/system