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Maintenance and Service Guide
Compaq Presario 5300 Series Computers

Product Description Troubleshooting Illustrated Parts Catalog
Home Removal & Replacement Jumper & Switch Information Specifications

Clearing CMOS
Power-On Self Test (POST)
Configuration
Diagnostic error codes
Troubleshooting without diagnostics
TROUBLESHOOTING

Clearing CMOS

If the power-on password is unknown, clearing CMOS will disable the password and allow the computer to be operated. 

The location of the Real-time Clock (RTC) battery is shown on the system board illustration below.

1 Complete the preparation for disassembly.
2 Remove the chassis cover .
3 Remove the fax/modem board.
4 Remove the system board.
5 Remove the RTC battery.

 

1.800.AT.COMPAQ
 
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