Cruzer Slice 16GB - cannot be bootable ?

Hello,

i’m on Windows 7. i’ve formated my usb Cruzer Slice  (using diskpart ) and i tried to create an WinPE bootable usb drive.

http://technet.microsoft.com/en-us/library/cc766092(WS.10).aspx

this process is working with with other USB keys (not sandisk), but not this one.

when i want to boot on it when my computer is booting, nothing happens. just freezing. ony ctrl+alt+del is allowed to reset the computer…

do you know if this model of USB flash drive can be bootable ?or i will have to buy other usb flash drives i know i can boot on it ?

thanks for your replies.