Swap Hard Drive

Ok lets see if I can explain my problem right
I`ve got 2 pcs of which 1 of them is getting the BSOD #1 pc so I thought I would swap the harddrive from the #1 one over to the other #2.
But when I tried this the #2 pc just keeps restarting at the bootup,I tried going into the BIOS and changing back to the default settings but its still the same
The #pcs is ok with its own harddrive in.
has any1 got any help

Thanks

 

what is a bsod?i dont think hard drives are interchangable unless you reformat and reinstall windows

 

Yes you cant swap drives from one to the other without wiping and reinstalling windows unless they are both exactly the same specs and same comp.

 

they have to be the same pc?or different for each other?i tried it a couple of times always had to reformat and reinstall

 

Thanks m8s
That explains it

BSOD = Blue Screen Of Death

 

Just 1 more question.
So does that mean if I change my motherboard pcu and the ram will I have to reinstall windows?

 

Just thought I would let you know
That I managed to swap the hard drives over by using the Windows XP Repair option
Had to reinstall SP2 and update windows but I didn`t lose any programs

Thanks for the help