Unknown user password
If the computer you are servicing has an unknown user password, follow these steps to clear the
password:
NOTE:
These steps also clear CMOS.
1.
Shut down the computer. If you are unsure whether the computer is off or in Hibernation, turn
the computer on, and then shut it down through the operating system.
2.
Disconnect all external devices connected to the computer.
3.
Disconnect the power from the computer by first unplugging the power cord from the AC outlet
and then unplugging the AC adapter from the computer.
4.
Remove the battery (see
Battery on page 37
).
5.
Remove the real-time clock (RTC) battery (see
RTC battery on page 78
).
6.
Wait approximately 5 minutes.
7.
Replace the RTC battery and reassemble the computer.
8.
Connect AC power to the computer. Do not reinsert any batteries at this time.
9.
Turn on the computer.
All passwords and all CMOS settings have been cleared.
34
Chapter 4 Removal and replacement procedures
Summary of Contents for Compaq 6520s
Page 1: ...HP Compaq 6520s Notebook PC Maintenance and Service Guide ...
Page 4: ...iv MSG revision history ...
Page 6: ...vi Safety warning notice ...
Page 24: ...Computer major components 14 Chapter 3 Illustrated parts catalog ...
Page 113: ...Where used 2 screws that secure the top cover to the base enclosure Torx T8M2 5 7 0 screw 103 ...
Page 141: ...RJ 11 modem Pin Signal 1 Unused 2 Tip 3 Ring 4 Unused 5 Unused 6 Unused RJ 11 modem 131 ...
