Sony PCG-F450 - Manual (Page 23)

Starting Your Computer !
Starting Your Computer
1
Slide the LCD lock lever in the direction of the arrow, and lift the
cover.
2
Press the power button on top of the computer until the green power
indicator light turns on.
3
If necessary, adjust the brightness controls for the LCD display. To
decrease the brightness, press Fn+F5 and then the down or left arrow
key. To increase the brightness, press Fn+F5 and then the up or right
arrow key.
✍
If you hold the power button in the On position for more than four seconds, the
computer turns off.
LCD lock lever
Power
button
Power button Power indicator