Hi vcxo,
I have a few questions for you before you try to reinstall. Answers to these questions may just help us narrow down the issue
When you say LabVIEW "crashed" and the menus and windows are "messed up" can you be more specific? Are there any error messages that pop up?
What version of LabVIEW are you using? Are the three computers different in any way (operating system, LabVIEW version, etc..)?
Finally, can you recreate this issue with just the example VI, without any of your added code?
Thanks!
Brian A.
National Instruments
Applications Engineer