Bluee Screen - stkpipe.sys

I have a PC (XP Pro) which has blue screened a couple of times. Once it is restarted it seems okay.
The last message was:
STOP: 0x0000007E (0xC0000005, 0xF074AC84, )xED239978, 0xED239674)
*** Stkpipe.sys - Address F074AC84 base at F02EC000, DateStamp 418C09cb
Any ideas what may be causing this PC to crash?
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I guess it's a RAM problem, but having a thorough scandisk won't hurt !!!
Open your windows normally if it does not start then run it  in safe mode and put windows cd in it now run SFC /scannow. If it won't work then run a windows repair.
Have a look here:

also run the manufacturers diagnostics tools.
is this correct?   >>  Stkpipe.sys    << i assume a typo somewhere
or post the minidump for more info !
I would try removing this software to see if that remedies the situation.
Copyright Information Copyright (C) Syntek America Inc. 2003-2004
Product Name Syntek USB 2.0 Video Pipeline Driver
Product Version
Vendor's Name Syntek America Inc.

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Windows XP

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