Long story but I have an Option branded MiniPCIE WWAN module which when inserted in my Dell XPS M1330, causes the laptop not to boot. Runs through the standard boot loading screen but pauses with a blinking cursor before the Vista stuff starts.

The modules Dell supplies overseas are Novatel Wireless branded ones, do Dell lock the BIOS to only accept recognised modules? Or maybe the module is faulty?

Thanks for your help.