Wake-On Lan; Power-On Sequence; Power-On Diagnostic Tests - HP EliteBook 745 G2 Maintenance And Service Manual

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:
press
3. If you pressed Esc, press
4. Navigate to Advanced > Built-in Device Options.
5. Under Wake-on LAN, select the appropriate WOL setting.
6. Press
7. Select Main > 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 and configures all PCI devices.
3. Initializes VGA software.
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.

Power-On Diagnostic Tests

The Power-on diagnostics performs basic integrity tests of the hardware to determine its functionality and
configuration. If a diagnostic test fails during hardware initialization the unit simply stops. There are no
messages sent to video.
NOTE: You may try to restart the unit and run through the diagnostic tests a second time to confirm the
first shutdown.
The following table lists the tests that are performed on the unit.
84 Chapter 9 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 to enter Computer Setup.
F10 to accept any changes.
or F10 at the appropriate time, you must restart the computer and again
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