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Resetting CMOS and/or the password jumper
CAUTION:
or the power-on password, the computer is inaccessible and can no longer be used.
Enabling the stringent password disables the ability to reset the password by moving the jumper on the
system board.
If you lose or forget the password, the system board must be replaced. This scenario is not covered under
warranty.
To prevent the computer from becoming permanently unusable, record your configured setup password or
power-on password in a safe place away from your computer. Without these passwords, the computer cannot
be unlocked.
To clear CMOS, disable the power-on or administrator password features, or to clear the power-on or
administrator passwords, complete the following steps:
1.
Shut down the operating system properly, then turn off the computer and any external devices, and
disconnect the power cord from the power outlet.
2.
With the power cord disconnected, press the power button again to drain the system of any residual
power.
WARNING!
disconnect the power cord from the wall outlet, and allow the internal system components to cool
before touching.
CAUTION:
system board even when the unit is turned off. Failure to disconnect the power cord can result in
damage to the system.
Static electricity can damage the electronic components of the computer or optional equipment. Before
beginning these procedures, ensure that you are discharged of static electricity by briefly touching a
grounded metal object. See the Safety & Regulatory Information guide for more information.
3.
Remove the access panel.
4.
Locate the headers and jumpers labeled CLR_CMOS and CLR_PSWD.
NOTE:
password jumper and other system board components, see the system board components image at
System board callouts on page
5.
Remove the jumper from pins 1 and 2.
6.
Place the jumper on either pin 1 or 2, but not both, so that it does not get lost.
7.
Replace the access panel and reconnect the external equipment.
8.
Plug in the computer and turn on power. Allow the operating system to start. This clears the current
passwords and disables the password features.
9.
Shut down the computer, unplug the power, and disconnect the external equipment.
10.
Remove the access panel.
11.
Place the jumper on pins 1 and 2.
12.
Replace the access panel.
13.
Reconnect the external equipment and plug in the computer.
94
Chapter 8 Password security and resetting CMOS
If you enable the stringent security feature in Computer Setup and you forget the setup password
To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to
When the computer is plugged in, the power supply always has voltage applied to the
The password jumper is blue so that it can be easily identified. For assistance locating the
43.
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