Solving General Problems; Cannot Access The Computer Setup (F10) Utility When Booting The Computer; Computer Appears Locked Up And Will Not Turn Off When The Power Button Is Pressed; Computer Will Not Respond To Keyboard Or Mouse - HP ProDesk 400 G7 SFF Maintenance And Service Manual

Solving general problems

You might be able to easily resolve the general problems described in this section. If a problem persists and you
cannot resolve it yourself or if you feel uncomfortable about performing the operation, contact an authorized
dealer or reseller.
CAUTION: When the computer is plugged into an AC power source, voltage is always applied to the system
board. To reduce the risk of personal injury from electrical shock, hot surfaces, or both, be sure to disconnect the
power cord from the AC outlet and allow the internal system components to cool before touching.

Cannot access the Computer Setup (F10) Utility when booting the computer

Use this information to troubleshoot the computer.
Cause
The Computer Setup (F10) Utility is set to Fast Boot causing the F10
access screen to display too briefly when booting the computer.

Computer appears locked up and will not turn off when the power button is pressed

Use this information to troubleshoot the computer.
Cause
Software control of the power switch is not functional.

Computer will not respond to keyboard or mouse

Use this information to troubleshoot the computer.
Cause
Computer is in Sleep state.
System has locked up.
USB cables may not be seated properly.

Computer date and time display is incorrect

Use this information to troubleshoot the computer.
ENWW
Solution
Before turning on the computer, press and hold f10. Turn on the
computer and continue to hold
Utility is displayed. - or – Follow the Windows® instructions for
rebooting the computer into the Computer Setup (F10) Utility.
Solution
1. Press and hold the power button for at least 4 s until the
computer turns off.
2. Disconnect the power cord from the electrical outlet.
Solution
To resume from Sleep state, press the power button. When
attempting to resume from Sleep state, do not hold down the
power button for more than 4 s. Otherwise, the computer shuts
down and you lose any unsaved data.
Restart computer.
Disconnect, and then reconnect USB cables to keyboard and mouse.
F10 until the Computer Setup (F10)
Solving general problems 51