Cannot remove computer cover or access panel.

Cause

Solution

Smart Cover Lock, featured on some computers, is locked.

Unlock the Smart Cover Lock using Computer Setup.

In case of forgotten password, power loss, or computer malfunction, you must manually disable the Smart Cover lock . A key to unlock the Smart Cover Lock is not available from HP. Keys are typically available from a hardware store.

Poor performance.

Cause

Solution

 

 

 

 

Processor is too hot.

1.

Make sure airflow to the computer is 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.

Make sure fans are connected and working properly

 

 

(some fans only operate when needed).

 

3.

Make sure the processor heat sink 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 accessed did not release reserved memory

Restart the computer.

back to the system.

 

 

 

 

 

Virus resident on the hard drive.

Run virus protection program.

 

 

Too many applications running.

Windows 7:

 

1.

Close unnecessary applications to free up memory.

 

2.

Add more memory.

 

3.

Some applications run in the background and can be

 

 

closed by right-clicking on their corresponding icons in

 

 

the task tray. To prevent these applications from

 

 

launching at startup:

 

 

In Windows 7:

 

 

a. Go to Start > All Programs > Accessories >

 

 

 

Run

 

 

b.

Type msconfig, and then press Enter.

 

 

c.

On the Startup tab of the System Configuration

 

 

 

Utility, clear applications that you do not want to

 

 

 

launch automatically, and the click OK.

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Chapter 8 Troubleshooting Without Diagnostics