BCOD on bootcamp win xp professional??

I have had a 2010 mbp 15" i7 with bootcamp windows xp pro 32bit on it for a while now and its been crashing just recently with a BCOD error : IRQL_is_not_less_or_equal, and says to remove any recently added hardware, but i havent touched the hardware in the mbp??? i have attached the minidump folder of the errors. Any help would be appreciated =[

View attachment Minidump.zip

does this happen everytime you boot? or just randomly? having taken a very quick look at the minidump it appears to be caused by portcls.sys this is related to a sound driver. i will take a better look later but it may be somewhere to start.

hey, thanks for the reply, no it does not happen everytime i boot ( or even when i boot) but occasionally when the mbp is left on for a while (without being used) or when i play a game.

i jus got a new different error (attached) i have never seen it b4 =S

View attachment Mini072710-01.zip

would it be alright if i just went to nvidia website an downloaded the lastest driver for the video card??? would it affect anything??

please help =]