Crash When Switching to Different File

I have Cubase LE5 w/Zoom R16 interface, everything runs fine until I try to switch from one project to another. Then the system crashes and I get a blue screen on the computer. Once the computer reboots and I open Cubase again I can open the other project. Any help on this would be greatly appreciated. Running Windows 7 64bit on a brand new Dell Inspiron 17R.