Samsung N640CN2021/EHQ Understanding Post, Adjusting the LCD Display, Turning Off Your Computer

Understanding POST

When you turn on your computer, a routine called POST (Power-On Self-Test) automatically runs to test the computer components. System logo appears on the screen during POST.

Screen messages are built into the computer to report both normal and abnormal system conditions. If an error message appears, take any action suggested in the message. If the message identifies the error condition but does not suggest any corrective action, write down the message and contact manufacturer or an authorised service center for assistance. (See ”Troubleshooting” on page 95.)

Adjusting the LCD Display

You may wish to adjust the LCD (Liquid-Crystal Display) when you begin using your computer. A TFT (Thin-Film Transistor) LCD does not require adjustment for contrast because the contrast is set to remain at maximum.

To adjust the LCD:

•Press <Fn+Right Arrow> to increase the display brightness.

•Press <Fn+Left Arrow> to decrease the display brightness.

Turning Off Your Computer

If your computer has a Windows operating system, turn off your computer by performing the shutdown procedure described in this section. Otherwise, you may lose data.

APM(Advanced Power Management) mode

To turn off the computer:

1.Click Start on the taskbar.

2.Click Shut Down.

3.Select the shut down option.

4.Click OK or Yes.

Using Your Computer for the First Time 7