Dell Dimension 2100 System Reference Manual page 39

To clear NVRAM for all devices and restart the computer:
1.
Enter the system setup program
2. Press the right-arrow key to move to the Advanced menu.
3. Press the down-arrow key to highlight the Boot
Configuration submenu, and press <Enter>.
4. Press the down-arrow key to highlight Reset Config Data. Then change
the setting to Yes (see
5. Press <F10> to exit the program and restart the computer.
Technical Specifications: Dell™ Dimension™ 2100
System Reference
Microprocessor
System Information
Expansion Bus
Memory
Drives
Ports
Video
Microprocessor
.
).
Table 3
Power
Physical
Environmental
Regulatory Notices
IRQ Assignments
Default Dell-Installed Card Placement