Do not turn off the main power switch immediately after turning it on. Doing so may result in damage to the hard disk or memory, leading to malfunctions.
Make sure the power cord is firmly plugged into the wall outlet.
Open the main power switch cover, and turn on the main power switch.
The main power indicator goes on.
After you switch the main power on, a screen may appear to indicate that the machine is initializing. Do not switch the power off during this process. Initialization takes about three minutes.