Hello

Command-Option-P-R

Firstly u need to shutdown, locate these keys on keyboard: Command, Option, P, and R.
You will need to hold these keys down simultaneously when you turn on the computer, press and hold the Command-Option-P-R keys. You must press this key combination before the gray screen appears and hold the keys down until the computer restarts and when you hear the startup sound for the second time, just release the keys. Adjust ur clock stteings if necessary :) lol baby game

Command-Option-P-R ^^

Command-Option-P-R
lol