HP Comprehensive Guide for Managing Your 280 G1 Desktop's Power and Passwords

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! To reduce the risk of personal injury from electrical shock and/or hot surfaces, be sure to

disconnect the power cord from the wall outlet, and allow the internal system components to cool before touching.

CAUTION: When the computer is plugged in, the power supply always has voltage applied to the 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 header and jumper, labeled CLR_CMOS/PASS..

NOTE: The password jumper is blue so that it can be easily identified. For assistance locating the password jumper and other system board components, see the system board components image at System board callouts on page 50.

5.Remove the jumper from pins 2 and 3.

6.Replace the access panel and reconnect the external equipment.

7.Plug in the computer and turn on power. Allow the operating system to start. This clears CMOS and the current passwords and disables the password features.

8.Shut down the computer, unplug the power, and disconnect the external equipment.

9.Remove the access panel.

10.Place the jumper on pins 2 and 3.

11.Replace the access panel.

12.Reconnect the external equipment and plug in the computer.

NOTE: You will receive POST error messages after clearing CMOS and rebooting advising you that configuration changes have occurred. Use Computer Setup to reset any special system setups along with the date and time.

Changing a Setup or Power-On password

To change the power-on or setup password, complete the following steps:

1.Turn on or restart the computer.

To change the Setup password, go to step 2.

To change the Power-on password, go to step 3.

2.To change the Setup password, as soon as the computer turns on:

-Press the Esc key while “Press the ESC key for Startup Menu” message is displayed.

-Press the F10 key to enter Computer Setup.

104 Chapter 9 Password security and resetting CMOS