Instructions
Soft Reset
Press and hold the "Power" button on your PS3 for about 10 seconds.
Release the "Power" button when the power light turns red. Your system turns on automatically. Load a disc into the tray, then test to see it it's working.
Perform another soft reset if your device is still not functioning properly.
Hard Reset
Select "System," then select "Backup" to backup your files before performing a hard a reset.
Press the "Power" switch on the back of your system to turn it off and then turn it back on. Press the "Power" switch on the front for a few seconds (until the system beeps). Your console comes on.
Go through a new setup and select "Format" from the "System" menu. It may take up to three hours for the disk to format.
Restore your backup files when the reset completes.