Have you tried another set of batteries? Try putting the batteries in without a flash card inserted. If the unit comes up, then do a reset with 2 plus b. Then put the card back. If that doesn't help, then leave both the batteries and card out for 24 hours and see if it comes back after that. If it doesn't, then you'll need to send it back. Pamela Rader, TECHNICAL SUPPORT American Printing House For The Blind 1839 Frankfort Ave. Louisville, KY 40206 PHONE: 1-800-223-1839, Ext. 307 >>> gbmagoo@xxxxxxxxxxx 04/07/06 09:05AM >>> I was reading a book and the 30 minute timer went off and then I can not get the unit to work again. I tried taking out the batteries out for a bet, and new batteries. I can not unlock or lock or get the bp to do anything or even get a sound or beep out of the unit. Help!!!