spool32 error

Sometimes when I start up my computer the 'Spool32' error appears on screen (as shown under). What is this and how do I cure it? I have used the 'debug' button but it keeps coming back and dose not fix the problem?

SPOOL32 caused an invalid page fault in
module SPOOL32.EXE at 017f:00402015.
Registers:
EAX=00000004 CS=017f EIP=00402015 EFLGS=00010283
EBX=00000000 SS=0187 ESP=0086ff84 EBP=00000000
ECX=c1681cd0 DS=0187 ESI=bff7c8bd FS=52d7
EDX=bffc9490 ES=0187 EDI=bff92b8f GS=0000
Bytes at CS:EIP:
ff 33 55 e8 d3 f0 ff ff 89 03 e8 de 0c 00 00 89
Stack dump:
00000000 00000004 0086ffcc 817739b0 00000008 81772860 bff88f20 00000000 817739b0 00000008 81772860 00000007 0086ffa4 0086fdb4 ffffffff bffc05b4

If you do a search in google for spool 32 you will find many possible reasons.
The first two things I do - 1.If the printer is not shared - in printer properties - select print directly to the printer - so that spooling is not used - then delete printer and reinstall printer driver if problem persists. Deleting tmp files in the temp folder and any folders in the print spool folder can also help.