Performing a wipe cache partition removes any temporary files that may be causing an issue with the device. All personal files and settings are not affected by this option.
Power the device off. Press the Power button then select Power off. If the device doesn't respond to input, press and hold the Volume Up/Down then press and hold Power button. When the device screen goes blank, release the Power button while continuing to hold Volume Up/Down then proceed with step 3.
Press and hold the Volume Up/Down then press the Power button.
When presented with the Boot Mode Selection Menu, release all buttons.
Press Volume Down to select Recovery then press Volume Up.
From the Droid triage screen:
Press and hold Volume down.
Press and release Volume up.
Release Volume down.
Select wipe cache partition then press the Power button. Use Volume keys to navigate options.
Select reboot system now then press the Power button. Use Volume keys to navigate options.