Help on Factory reset for PSP 2001?

Hi there. I have a PSP 2001 running CFW 5.50 Gen3, and the screen recently turned off, for no apparent reason. I can hear the noises and everything, but I cant see through the blank screen. If you don't mind, could you tell me the location of the factory reset? In the form of like "From the main screen, go all the way to the right, then go down two, press, then down 5, then press", ect ect. Thanks a lot!