hi I'm getting the blue screen with 'Page fail in nonpaged area' oxooooooooo50 0xf948c884 oxoooooooooo oxf7f0159c message on startup, gets 5sec into startup progress bar running XP pro sp2 on AMD athalon system all fine yesterday, had no problems 4 ages, shut down ok, wouldn't start this morning memory swapped for known good memory, still same problem no new drivers or hardware installed runs fine with no probs in safe mode system restore doesn't help tried reinstalling ati drivers, can't uninstall norton in safe mode to see if thats the problem. any help would be much apprieciated in event viewer the only consistent error comes from a347bus event id.4 driver detected internal error in its data strucutres for. (??) no minidumps available. nothing for the last 4 months!? and it is turned on what else can i send to help?