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Using System Setup: Dell OptiPlex GX115 System User's
Guide
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 system configuration information stored in nonvolatile random-access memory (NVRAM) on
the system board. If the system detects a discrepancy, it generates error messages that
identify the incorrect configuration settings. The system then prompts you to enter System Setup to correct the setting.
You can use System Setup as follows:
- To change the system configuration information after you add, change,
or remove any hardware in your system
- To set or change user-selectable optionsfor example, the time
or date on your system
You can view the current settings at any time. When you change a
setting, in many cases you must reboot the system before the change takes effect.
After you set up your system, run System Setup to familiarize
yourself with your system configuration information and optional settings. Dell recommends
that you print the System Setup screens (by pressing the <Print Screen> key) or
record the information for future reference.
Before you use System Setup, you need to know the kind of diskette
drive(s) and hard-disk drive(s) installed in your computer. If you are unsure of this
information, see the Manufacturing Test Report that was shipped with your system and that
is located in the Dell Accessories folder.
To enter System Setup, perform the following steps:
- Turn on your system.
If your system is already on, shut it down and then turn it on again.
- When the Press <F2> to Enter Setup window
appears in the upper-right corner of the screen, press <F2>.
If you wait too long and your operating system begins to load into
memory, let the system complete the load operation; then shut down the system and
try again.
 |
NOTE: To ensure an orderly system
shutdown, consult the documentation that accompanied your operating system. |
The System Setup screen displays the current setup
and configuration information and optional settings for your system (see Figure 1). Information on the System Setup
screen is organized in four areas:
- Title The box at the top of all screens lists the system name.
- System data The two boxes below the title box display your
system processor, level 2 (L2) cache, service tag, and the version number of the basic
input/output system (BIOS).
- Options The main area of the screen is a scrollable window
containing options that define the installed hardware in your computer and the power
conservation and security features for your computer.
Fields next to the options contain settings or values. You can
change those values that appear bright on the screen. Options or values that you cannot
change (because they are determined or calculated by the computer) appear less bright.
- Key functions The line of boxes across the bottom of all screens lists keys and
their functions within System Setup.
Figure 1. Sample System Setup Screen

Table 1 lists the keys you use to view or change information on the System
Setup screen and to exit the program.
Table 1. System Setup Navigation Keys
| *For most of the
options, any changes you make are recorded but do not take effect until the next time you
boot the system. For a few options (as noted in the help area), the changes take effect
immediately. |
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