HP 402 G1 manual Solving general problems, 1Solving General Problems

●If you have installed an operating system other than the factory-installed operating system, check to be sure that it is supported on the system.

●If the system has multiple video sources (embedded, PCI, or PCI-Express adapters) installed (embedded video on some models only) and a single monitor, the monitor must be plugged into the monitor connector on the source selected as the primary VGA adapter. During boot, the other monitor connectors are disabled and if the monitor is connected into these ports, the monitor will not function. You can select which source will be the default VGA source in Computer Setup.

CAUTION: When the computer is plugged into an AC power source, there is always voltage applied to the system board. You must disconnect the power cord from the power source before opening the computer to prevent system board or component damage.

Solving general problems

You may be able to easily resolve the general problems described in this section. If a problem persists and you are unable to resolve it yourself or if you feel uncomfortable about performing the operation, contact an authorized dealer or reseller.

WARNING! 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 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.

Table 7-1Solving General Problems

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

Cause Solution

Software control of the power switch is not functional.

1.Press and hold the power button for at least four seconds until the computer turns off.

2.Disconnect the power cord from the electrical outlet.

Computer will not respond to keyboard or mouse.

Cause Solution

Computer is in Sleep state.

To resume from Sleep state, press the power button.

CAUTION: When attempting to resume from Sleep state, do not hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data.

System has locked up.	Restart computer.
Computer date and time display is incorrect.
Cause	Solution
RTC (real-time clock) battery may need to be replaced.	Reset the date and time under Control Panel (Computer Setup
NOTE: Connecting the computer to a live AC outlet prolongs the	can also be used to update the RTC date and time). If the problem
	persists, replace the RTC battery. See the Removal and
life of the RTC battery.	Replacement section for instructions on installing a new battery,

Solving general problems 59