Wake-On Lan; Power-On Sequence - HP t820 Maintenance & Service Manual

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Wake-on LAN

Wake-on LAN (WOL) allows a computer to be turned on or resumed from sleep or hibernation state by
a network message. You can enable or disable WOL in Computer Setup using the S5 Maximum
Power Savings setting.
To enable or disable WOL:
1.
Turn on or restart the computer.
2.
Press either
bottom of the screen.
NOTE:
again press
3.
If you pressed Esc, press
4.
Navigate to Power > Hardware Power Management.
5.
Set S5 Maximum Power Savings as follows:
Disable WOL = Enabled
Enable WOL = Disabled
6.
Press
7.
Select File > Save Changes and Exit.

Power-On Sequence

At power-on, the flash boot block code initializes the hardware to a known state, then performs basic
power-on diagnostic tests to determine the integrity of the hardware. Initialization performs the
following functions:
1.
Initializes CPU and memory controller.
2.
Initializes VGA software.
3.
Initializes and configures all PCI devices.
4.
Initializes the video to a known state.
5.
Initializes USB devices to a known state.
6.
Performs power-on diagnostics. For more information, see "Power-On Diagnostic Tests".
7.
The unit boots the operating system.
72
Appendix C Diagnostics and Troubleshooting
Esc
or
F10
while the "Press the ESC key for Startup Menu" message is displayed at the
If you do not press
Esc
Esc
or
F10
when the monitor light turns green to access the utility.
F10
F10
to accept any changes.
or
F10
at the appropriate time, you must restart the computer and
to enter Computer Setup.

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