My pc is not booting by the bootable pen drive containing ubuntu studio

i have the pc with configuration- MERCURY PVM7 MOTHERBOARD, INTEL CELERON PROCESSOR,768MB OF MEMORY,40GB HDD,WITH CD-ROM,RUNNING OS-UBUNTU 10.10, and my question is that my pc is not booting my bootable pen drive contaning ubuntu studio even i changed the booting options also………… and my laptop is booting my pen drive….. so plzz give me solution