Things You'll Need
Instructions
Attach the PS3's USB cable to your computer. Find your PS3 directory. Perform a system backup of your PS3 game information so you do not lose any game saves when trying to repair the NAND.
Find the power switch, located on the back of the PS3 console. Flip the switch to the off position and wait until the system has completely shut down. Flip the switch back on.
Locate the power button the front of the PS3. Press and hold the button until you hear three beeps. An initial setup screen will appear. Press the "X" button on your controller to confirm the initial setup. Follow the on-screen directions to continue through the setup procedures.
Run a full reformat by selecting the option "System > Format" when it appears in the setup screen. This will perform a complete restore of the system software, bringing back the default settings. This process can take approximately three hours.
Transfer your backup files to your reformatted PS3 to pick up where you left off.