Troubleshooting Without Diagnostics

Solving Minor Problems

Solving Minor Problems
ProblemCausePossible Solution

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

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 electrical plug from outlet.

Computer will not

Computer is in

Press the power button or press any

respond to USB

standby mode.

key to resume from standby mode.

keyboard or mouse.

 

Ä When attempting to resume from

 

 

 

 

standby mode, 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

RTC (real-time clock)

time display is incorrect.

battery may need to be

 

replaced.

 

Connecting the

 

computer to a live

 

AC outlet prolongs

 

the life of the RTC

 

battery.

1.Reset the date and time under Control Panel. Computer Setup can also be used.

2.Replace the RTC battery.

Computer appears to

Network driver is loaded

pause periodically.

and no network

 

connection is established.

Establish a network connection, or use Computer Setup or Microsoft Windows Device Manager to disable the network controller.

Cursor will not move

The Num Lock key

Press the Num Lock key. The Num

using the arrow keys on

may be on.

Lock key can be disabled (or

the keypad.

 

enabled) in Computer Setup.

 

 

 

 

There is no sound or

There is no sound or

1.

Check the F10 BIOS settings to

sound volume is too

sound volume is too low.

 

make sure the internal system

low.

 

 

speaker is not muted (this setting

 

 

 

does not affect the external

 

 

 

speakers).

 

 

2.

Make sure the external speakers

 

 

 

are properly connected and

 

 

 

powered on and that the

 

 

 

speakers' volume control is set

 

 

 

correctly.

 

 

3.

Use the system volume control

 

 

 

available in the operating system

to make sure the speakers are not muted or to increase the volume.

 

D–2

433611-001

Service Reference Guide, dx7300