This message means that the operating system has become corrupted. The best thing to do would be to send it in for repair. However, if you are concerned about data on the collector and would like to retrieve it before you send it in, you can follow the instructions found in our Knowledge Base article #660 on Recovering from a White Screen Lock-up. Here is the link to that article.
http://update.carlsonsw.com/kbase_main. ... pic_id=660
There is no guarantee that the files on the collector will be salvageable following this reinstallation of the operating system.