Hope someone can help me. I cant get the x5 to turn on with the power button. I can start the unit by slipping the battery out and back in and then the button will work for 1 time. or do a soft reset and it will turn on. the will dimm and undim the screen and will shut it off but will not turn it on. Also the contact and calander buttons wont turn it on either. ANY HELP PLEASE - Thanks in advance