Table of Contents
Advertisement
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.
Before disassembling the computer, follow these steps:
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 cord.
4.
Remove the battery (see
5.
Remove the real-time clock (RTC) battery (see
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.
36
Chapter 4 Removal and replacement procedures
Battery on page
39).
RTC battery on page
58).
Advertisement
Table of Contents
