Dell Inspiron 17 7778 2-in-1 Inspiron 177000 Series 2-in-1 Service Manual - Page 148

BIOS overview, Entering the BIOS setup program, Boot menu, Boot menu enhancements

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BIOS overview The BIOS manages data flow between the computer's operating system and attached devices such as hard disk, video adapter, keyboard, mouse, and printer. Entering the BIOS setup program 1 Turn on or restart your computer. 2 Press F2 when the Dell logo is displayed on the screen to enter the BIOS setup program. You can change the user-defined settings in BIOS setup program. Boot menu The Inspiron 17-7778 includes a one-time boot menu. By using this feature, you can change the sequence of devices that your computer attempts to boot from, for example, floppy, CD-ROM, or hard drive. Boot menu enhancements The boot menu enhancements are as follows: • Easier Access - Press F12 to access the boot selection menu. • User Prompting - The user is prompted to use the keystroke on the BIOS screen. • Diagnostics Options - The boot menu includes the ePSA diagnostic options. Timing key sequences The keyboard is not the first device initialized by Setup. As a result, if you press a keystroke too early, the keyboard is locked out. In such case, a keyboard error message is displayed on the screen, and you cannot restart your computer with the Ctrl+Alt+Del key combination. To prevent the keyboard from locking, wait until the keyboard is initialized completely. The keyboard is initialized if one of the following occurs: • The keyboard lights flash. 148

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BIOS overview
The BIOS manages data flow between the computer's operating system and
attached devices such as hard disk, video adapter, keyboard, mouse, and
printer.
Entering the BIOS setup program
1
Turn on or restart your computer.
2
Press F2 when the Dell logo is displayed on the screen to enter the BIOS
setup program.
You can change the user-defined settings in BIOS setup program.
Boot menu
The Inspiron 17-7778 includes a one-time boot menu. By using this feature,
you can change the sequence of devices that your computer attempts to
boot from, for example, floppy, CD-ROM, or hard drive.
Boot menu enhancements
The boot menu enhancements are as follows:
•
Easier Access
— Press F12 to access the boot selection menu.
•
User Prompting
— The user is prompted to use the keystroke on the BIOS
screen.
•
Diagnostics Options
— The boot menu includes the ePSA diagnostic
options.
Timing key sequences
The keyboard is not the first device initialized by Setup. As a result, if you press
a keystroke too early, the keyboard is locked out. In such case, a keyboard
error message is displayed on the screen, and you cannot restart your
computer with the Ctrl+Alt+Del key combination.
To prevent the keyboard from locking, wait until the keyboard is initialized
completely. The keyboard is initialized if one of the following occurs:
•
The keyboard lights flash.
148