Maintenance and Service Guide
Compaq Presario 4900, 5000, & 5100 Series Computers

TROUBLESHOOTING Clearing CMOS 4900 Series System Board   5 To disable the password, move the jumper (JP2) from pins 1-2 to pins 2-3 for 10 seconds, then return to pins 1-2. 6 Replace the system board bracket and perform the desired troubleshooting.

CMOS jumper location

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