Troubleshooting Without Diagnostics

Solving Minor Problems (Continued)

Problem

Cause

Possible Solution

Cannot remove

Smart Cover Lock,

computer cover or

featured on some

access panel.

computers, is locked.

1.Unlock the Smart Cover Lock using Computer Setup.

2.Use the Smart Cover FailSafe Key in case of forgotten password, power loss, or computer malfunction.

Poor performance is

Processor is hot.

1.

Ensure airflow to the computer is

experienced.

 

 

not blocked. Leave a 10.2-cm

 

 

 

(4-inch) clearance on all vented

 

 

 

sides of the computer and above

 

 

 

the monitor to permit the required

 

 

 

airflow.

 

 

2.

Ensure the fans are connected

 

 

 

and working properly (some fans

 

 

 

only operate when needed).

 

 

3.

Ensure the processor heatsink is

 

 

 

installed properly.

 

Hard drive is full.

Transfer data from the hard drive to

 

 

create more space on the hard drive.

 

 

 

 

Low on memory.

Add more memory.

 

 

 

 

Hard drive fragmented.

Defragment hard drive.

 

 

 

 

Program previously

Restart the computer.

 

accessed did not release

 

 

 

reserved memory back to

 

 

 

the system

 

 

 

 

 

 

Virus resident of the hard

Run virus protection program.

 

drive.

 

 

 

 

 

 

 

Too many applications

1.

Close unnecessary applications.

 

running.

2.

Add more memory.

 

 

 

 

 

 

 

Some software

1.

Lower the display resolution for

 

applications, especially

 

the current application or consult

 

games, are stressful on the

 

the documentation that came with

 

graphics subsystem.

 

the application for suggestions on

 

 

 

how to improve performance by

 

 

 

adjusting parameters in the

 

 

 

application.

 

 

2.

Add more memory.

 

 

3.

Upgrade the graphics solution.

 

 

 

 

Cause unknown.

Restart the computer.

 

 

 

 

 

Service Reference Guide, dc7700

433612-001

D–3