Dell Dimension XPS D Series Reference And Troubleshooting Manual page 143

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This appendix describes the system setup program, which you can use to configure
your computer system as well as enable and disable your system's password
features.
Each time you turn on your computer system or press the reset button, the system
compares the hardware installed in the system to the hardware listed in the configu-
ration information stored in nonvolatile random-access memory (NVRAM) on the
system board. If the system detects a discrepancy between the two, it generates
error messages that identify the incorrect configuration settings. The system then
prompts you to enter the system setup program to correct the setting.
You can use the system setup program as follows:
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To change the system configuration information after you add, change, or remove
any hardware in your system
‡
To set or change user-selectable options—for example, the system password
Dell recommends that you print the system setup program screens (by pressing
<Print Screen>) or write down the information for future reference.
Before you use the system setup program, you need to know the kind of hard-disk
drive(s) and diskette drive(s) installed in your computer. If you are unsure of any of this
information, refer to the online Manufacturing Test Report in the Dell Accessories
folder.
System Setup Program B-1