Service Manual

BIOS overview

The BIOS manages data flow between the computer's operating system and attached devices such as the 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-definable settings in BIOS setup program.

Timing key sequences

The keyboard is not the first device initialized by the BIOS setup program. As a result, if you press a keystroke too early, the keyboard

is locked out. In such cases, 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.

• The F2=Setup prompt appears at the top-right corner of the screen during boot.

System Setup Options

NOTE: Depending on your computer and its installed devices, the items listed in this section may or may not appear.

Table 3. System setup options—Main menu

Main

System Time Displays the current time in hh:mm:ss format.

System Date Displays the current date in mm/dd/yyyy format.

BIOS Version Displays the BIOS version.

Product Name Displays the model number of your computer.

Service Tag Displays the service tag of your computer.

Asset Tag Displays the asset tag of your computer.

CPU Type Displays the processor type.

CPU Speed Displays the processor speed.

CPU ID Displays the processor identification code.

CPU L1 Cache Displays the processor L1 cache size.

CPU L2 Cache Displays the processor L2 cache size.

CPU L3 Cache Displays the processor L3 cache size.

Integrated Graphics Displays the integrated graphics.

Discrete Graphics 1 Displays the first discrete graphics installed on your computer.

First HDD Displays the type of hard drive installed.

Second HDD Displays the type of secondary hard-drive installed.

Third HDD Displays the type of third hard-drive installed.

Fourth HDD Displays the type of fourth hard-drive installed.

M.2 PCIe SSD-1 Displays the type of primary SSD installed.

M.2 PCIe SSD-2 Displays the type of secondary SSD installed.