"Compaq.com - Compaq Presario Series Maintenance and Service Guide - Models: 1683, 1685, 1687, 1688, and 1690

Reading hard drive takes an unusually long time after restarting the computer.

Hard drive error occurs.

Hard drive does not work.

System entered Hibernation due to low battery condition and is now exiting from it.

Hard drive has bad sectors or has failed.

Hard drive is not seated properly.

Give the system time to restore the previously saved data to its exact state before Hibernation.

Run Computer Checkup.

Turn off and unplug the computer, remove the battery pack, and remove and then reinstall the hard drive.

Solving Hardware Installation Problems

Some common causes and solutions for hardware installation problems are listed in the following table.

Solving Hardware Installation Problems

Problem

 

Probable Cause

 

Solutions(s)

 

 

 

 

 

A new device is not recognized as part

 

Cable(s) of new external device are

 

Ensure that all cables are properly

of the computer system.

 

loose or power cables are

 

and securely connected.

 

 

unplugged.

 

 

 

 

 

 

 

 

 

Power switch of new external device

 

Turn off the computer, turn on the

 

 

is not turned on.

 

external device, then turn on the

 

 

 

 

computer to integrate the device

 

 

 

 

with the computer system.

 

 

 

 

 

 

 

Device is not seated properly.

 

Turn off the computer and reinsert

 

 

 

 

the device.

 

 

 

 

 

Solving Keyboard/Numeric Keypad Problems

Some common causes and solutions for keyboard/numeric keypad problems are listed in the following table.

Solving Keyboard/Numeric Keypad Problems

Problem

 

Probable Cause

 

Solution(s)

 

 

 

 

 

Embedded numeric keypad on computer

 

Num Lock function is not enabled.

 

Press the Shift+NumLk keys to

keyboard is disabled.

 

 

 

enable the Num Lock function

 

 

 

 

and embedded numeric keypad.

 

 

 

 

The Num Lock icon on the status

 

 

 

 

panel turns on.

 

 

 

 

 

Embedded numeric keypad is disabled

 

External numeric keypad is

 

Disconnect the external numeric

and Num Lock function is on.

 

connected to the computer.

 

keypad from the computer.

 

 

 

 

 

Solving Memory Problems

Some common causes and solutions for memory problems are listed in the following table.

Solving Memory Problems

Problem

 

Probable Cause

 

Solution(s)

 

 

 

 

 

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