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Note - for the QVGA units you will only see the upper left corner of the App Manager screen since that software does not re-scale itself for the QVGA system. Thus, use the Alt-Arrow key combinations to move the screen around until you find the 'Exit Interact' button on the menu.
OR
This method applies to models that use a Compact Flash (CF) card for their boot and storage drive. If your unit does, then power off the unit and remove the CF card. Install the CF card into a CF card reader on your main PC and access the contents using Windows Explorer (or comparable utility). Off the root of the CF drive you will see several directories and you should go into the one named CTC. In there, find the specific file PSU.CFG and open that file using a generic ASCII text editor (like Notepad). There will be a line containing: poweron runitr="YES"
Edit this line to change YES to NO leaving all other formatting characters the same. For example: poweron runitr="NO"
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