Are you trying to INSTALL a new operating system or to REPAIR an existing one? In both cases WHICH one? (XP or Vista)? Can you boot from CD/DVD drive the correspondent OS original CD/DVD? jaclaz i am trying to install any OS... none seem to work i cant boot from any cd... the computer started out with vista then to Windows 7, then back to Vista Now, i have formatted the hard-drive, which is partitioned in 2, now i am trying to install XP HOME another thing is that i can use the hdd out of the laptop as a portable hdd fine using a hdd case its fine to transfer date to and from other computer? also im pretty sure the actual name of the cd/dvd drive has changed i could of sworn it had a longer name its somehting like mits***o594uj something but i thought it was longer?