7-8
Jumper and Switch Information
7.2.2 Clearing Configuration
The computer's configuration (CMOS) may occasionally be corrupted. If it does, it is necessary to
clear the CMOS memory. The clear-CMOS header, located on the system board, is used for this
function. The clear-CMOS header is labeled “E8 Clear CMOS” on the Pentium system board and
labeled “Clear CMOS” on the Pentium II system board
To clear and reset the configuration, perform the following procedure:
1. Prepare the computer for disassembly by following the procedures specified in Section 5.3 or 6.3
for desktop or minitower computers, respectively.
2. Remove the hood or access panel (see Section 5.6 or 6.6.1).
3. Move the jumper on clear-CMOS header from pins 1 and 2 to pins 2 and 3 for five seconds; then
replace the jumper on pins 1 and 2.
Figure 7-7.
Clear CMOS Header (E8) Location, Pentium System Board
Figure 7-8.
Clear CMOS Header Location, Pentium II System Board
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