hi,I have just tried upgrade from xp home to vista home preimum, my system specs meet the requirements of vista and i uninstalled all software which it recognised as being incompatable..The installation seemed to go fine untill it got to the end of completing upgrade, from here i goes into a loop of restarting the computer, a blue screen appears for a second until it reboots.Running a safe mode session results in it stalling at btkrn.sys.any ideas of how to fix this are welcomethanks for reading
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