Restart in Safe Mode - DROID RAZR HD / RAZR MAXX HD by MOTOROLA
Safe Mode puts your phone in a diagnostic state (returned to default settings) so you can determine if a third-party app is causing your device to freeze, reset or run slow.
An alternate method is available if the device is unresponsive or won't power on.
Press and hold the Power button.
Touch and hold Power off.
From the Reboot to safe mode screen, tap OK.
Allow several minutes for the device to power off and restart into Safe Mode.
Upon reboot, Safe Mode appears in the lower left.
With Safe Mode enabled, test device and app functionality. If the previous issue fails to occur, the cause has been isolated to a third-party app and all recently installed or updated apps should be uninstalled.
Power cycle the device to disable Safe Mode, reinstall then test each app, one at a time, to identify which is causing the problem.