Cimatron E Crashing Laptop

Hi.
Does anyone have any suggestions as to why my laptop keeps crashing with Cimatron E 10? I have had the laptop specs checked and okayed for Cimatron. There is 50 GB free space on my hard drive. The latest updates for Cimatron are installed. The latest Windows 7 updates are installed. I have used CCleanup to do all the registary clean ups etc. I have checked disc for errors and defraged etc.
Thanks.