Help needed.. problem after crash and reboot

hey im new to the forums… ive been using comodo internet security premium for a while now…been really pleased with it althought i havent played with any of the settings or anything…

ive been having a problem with my windows 7 laptop where its been locking up alot lately and ive had to keep turning it off and rebooting it …i havent found out why its been locking up yet…but sometimes upon restart ive found comodo seems to have lost al defence + rules as it keeps asking me if i want to block every program etc again including lots of internal windows programs etc… which is really annoying… is there anythign i can do to fix this or prevent it happening… any advice would be great