Page fault after logging on to PC

The following error appears after logging onto PC.

This program performed an illegal error

EXPLORER caused an invalid page fault in
module at 0000:00740065.
Registers:
EAX=00000001 CS=018f EIP=00740065 EFLGS=00010202
EBX=00000027SS=0197 ESP=00a7f628 EBP=00a7f630
ECX=c95f07a0 DS=0197 ESI=00a7f688 FS=2d07
EDX=bffc9490 ES=0197 EDI=00000000 GS=0000
Bytes at CS:EIP:

Stack dump:
00220030 00000000 00a7f69c 7fcbff85 008d0ad0 00a7fa70 008d0ae8 bff8516b 0043f3c4 00a7fa70 3038367b 38356539 33612d30 312d3761 2d316431 30306139