phone was working fine 40% battery and was on charger for at least 15 min, then suddenly shut off. won't turn back on...did give error message that saysAP fastboot Flashmoode (5)battery lowcannot origramconnect usbdata cable????help
Try holding the power and volume down buttons simultaneously for 15-30 seconds and see if that reboots it.
The battery or cable may be going bad.