Backtrack prob

i downloaded backtrack usb …!
but that is not running only in my PC…
BOOT ERROR msg i found..!!
i tried this to frnd’s home working properly
PC configuration:
Processor : Intel Core 2 Duo
Motherboard : intel 945
Answer #1
Check ur boot device settings…. Select Removable device/USB as first boot device…. Hope it’ll fix ur problem…
If u still experience problem >>>>
try to update ur BIOS….