Compaq Deskpro EN Series - System Board Jumpers; Clearing Configuration (CMOS)

Compaq Deskpro EN Series of Personal Computers 9-7
9.4 System Board Jumpers
Locating the CMOS Jumpers
9.4.1 Clearing Configuration
The computer's configuration (CMOS) may occasionally be corrupted. If it does, it is necessary to
clear the CMOS memory.
To clear and reset the configuration, perform the following procedure:
1. Prepare the computer for disassembly (Section 5.4 or 6.3).
CAUTION: The power cord must be disconnected from the power source before changing the jumpers.
Failure to do so may damage the system board.
2. Remove the system unit cover (Section 5.6) or the access panel (Section 6.6).
3. Move the E50 jumper from pins 1 and 2 to pins 2 and 3 for 60 seconds; then, replace the jumper
to its original position.
4. Replace the system cover.
5. Turn the computer on.
6. Run the Computer Setup utility to reconfigure the system.
When CMOS is cleared, both the power-on password and the setup password become invalid
because both are stored in the configuration memory. You will need to reset the passwords.