Hi guys, Installed XP Home on a old Samsung hard drive. Installed it no worries. I then tried to add a second hard drive acting as a slave (THIS WAS A NEW ONE). It all then went wrong. The samsung hard drive would then not boot. It was recognised in the BIOS as SAUSUMH """. The partition that Windows was installed on had disappeared so that the 30GB of the drive was recognised as 7GB (the unpartitioned space). The newer hard drive also will not allow installation of Windows or act as a slave. One of the typical messages on the drives is: INT13/ 02h Read error (AX=0101, DL=80). The other occurence may be a lockup at system bootup or a message saying hard drive read error. I am thinking that both hard drives are dead. Any ideas? The thing is though I have tried hard drives (I know to be working in other computers, and still work after being in the duff computer) in the computer not working and I get the same sort of errors. I have tried different IDE cables, hard drive combinations, memory the lot. A have cleared the CMOS (loaded BIOS defaults). The only things that haven't been changed are the power supply. Could such a terrible problem be caused from a power supply (its running at about 11.5volts). Please, please, please help!!!!!