Service Manual

24
BIOS setup program
BIOS overview
CAUTION: Unless you are an expert computer user, do not change the settings in the BIOS Setup program. Certain
changes can make your computer work incorrectly.
NOTE: Before you change BIOS Setup program, it is recommended that you write down the BIOS Setup program screen
information for future reference.
Use the BIOS Setup program for the following purposes:
• Get information about the hardware installed in your computer, such as the amount of RAM and the size of the hard drive.
• Change the system conguration information.
• Set or change a user-selectable option, such as the user password, type of hard drive installed, and enabling or disabling base
devices.
Entering BIOS setup program
1. Turn on (or restart) your computer.
2. During POST, when the DELL logo is displayed, watch for the F2 prompt to appear, and then press F2 immediately.
NOTE: The F2 prompt indicates that the keyboard is initialized. This prompt can appear very quickly, so you must
watch for it, and then press F2. If you press F2 before the F2 prompt, this keystroke is lost. If you wait too long and
the operating system logo appears, continue to wait until you see the desktop. Then, turn o your computer and try
again.
Clearing CMOS Settings
WARNING: Before working inside your computer, read the safety information that shipped with your computer and follow
the steps in Before working inside your computer. After working inside your computer, follow the instructions in After
working inside your computer. For more safety best practices, see the Regulatory Compliance home page at
www.dell.com/regulatory_compliance.
1. Remove the top cover.
2. Locate the password reset jumper (PASSWORD) on the system board. See "System-board components”.
3. Remove the jumper plug from pins 2 and 3 and x it on pins 1 and 2.
4. Wait for approximately ve seconds to clear the CMOS setting.
5. Remove the jumper plug from pins 1 and 2 and replace it on pins 2 and 3.
1.
pin 1 2. pin 2
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