Error while downgrading vista to xp

[otyk]

hi all mates!

long time no see you

i'm having some troubles over here, a frined of my has bought a laptop [toshiba satellite a505d-s6958]

and by default, comes with windows vista, and he's pretty newbie for computers, so he decided to move to XP

i'm trying to do that, but, at the end of loading previous files, the bluescreen appears and i can not partition/formatting the hdd.

i guess is not physical damage, 'cause the laptop is new, and works perfectly with it's OS.

i've disabled the sata compatibility on the bios, and tried to use the fujitsu erasing tool

but i still have the same trouble.

i was looking for something familiar in the forum, but i can't get it.

can anyone help me?

please!?

[cluberti]

Well, knowing what the BSOD was might be a good start. Considering there's more than 200 possible bugcheck codes, starting with which one you got will give us a better idea of what failed. It does sound like it may be 0x7B (INACCESSIBLE_BOOT_DEVICE) or 0xEB (UNMOUNTABLE_BOOT_VOLUME), but we need to know to be sure.