i can't reformat my cousin's Compaq NX6320 laptop with any OS cd. whenever i reformat it, after windows setup, copying files, reboot, then there's stop error. this one if i try to reformat its hdd as external (after taking it out). if from internal, after windows setup, there's msg saying that no hdd found or something has to do with manufacturer diagnostic or something.

i tried reformat the hdd on another laptop, it works. then i switch the hdd back, but after bios, there's a msg saying 'disk read error, press ctrl+alt+del to restart'.

i dont know where to post, so i decided to post here since there's stop error related

EDITED: problem solved