Power Up 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 can be powered on and is responsive.
Ensure the device is powered off.
Press and hold the Power button until the Motorola logo appears then release.
With the Motorola logo onscreen, press and hold the Volume down button.
Continue to hold the Volume down button until "Safe Mode" appears in the lower-left of the screen then release.
This may take approximately 1 minute.
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.