Compaq 100B Maintenance and Service Guide - Page 62

Cannot remove computer cover or access panel., Poor performance is experienced.

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Cursor will not move using the arrow keys on the keypad. Cause Solution The Num Lock key may be on. Press the Num Lock key. The Num Lock light should not be on if you want to use the arrow keys. Cannot remove computer cover or access panel. Cause Smart Cover Lock, featured on some computers, is locked. Solution Unlock the Smart Cover Lock using Computer Setup. The Smart Cover FailSafe Key, a device for manually disabling the Smart Cover Lock, is available from HP. You will need the FailSafe Key in case of forgotten password, power loss, or computer malfunction. Order PN 166527-001 for the wrench-style key or PN 166527-002 for the screwdriver bit key. Poor performance is experienced. Cause Processor is hot. Hard drive is full. Low on memory. Hard drive fragmented. Program previously accessed did not release reserved Memory back to the system. Virus resident on the hard drive. Too many applications running. Solution 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 heatsink is installed properly. Transfer data from the hard drive to create more space on the hard drive. Add more memory. Defragment hard drive. Restart the computer. Run virus protection program. 1. Close unnecessary applications to free up memory. 2. Add more memory. 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, go to Start > All Programs > Accessories > Run (Windows 7) and type msconfig. On the Startup tab of the System Configuration Utility, clear applications that you do not want to launch automatically. 54

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54
Cursor will not move using the
arrow
keys on the keypad.
Cause
Solution
The
Num Lock
key may be on.
Cannot remove computer cover or access panel.
Cause
Solution
Smart Cover Lock, featured on some computers, is locked.
Poor performance is experienced.
Cause
Solution
Processor is hot.
Hard drive is full.
Low on memory.
Hard drive fragmented.
Program previously accessed did not release reserved
Memory back to the system.
Virus resident on the hard drive.
Too many applications running.
Press the
Num Lock
key. The Num Lock light should not be on
if you want to use the
arrow
keys.
Unlock the Smart Cover Lock using Computer Setup.
The Smart Cover FailSafe Key, a device for manually
disabling the Smart Cover Lock, is available from HP. You will
need the FailSafe Key in case of forgotten password, power
loss, or computer malfunction. Order PN 166527-001 for the
wrench-style key or PN 166527-002 for the screwdriver bit
key.
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 heatsink is installed properly.
Transfer data from the hard drive to create more space on the
hard drive.
Add more memory.
Defragment hard drive.
Restart the computer.
Run virus protection program.
1.
Close unnecessary applications to free up memory.
2.
Add more memory. 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, go to
Start
>
All
Programs
>
Accessories
>
Run
(Windows 7) and type
msconfig
. On the
Startup
tab of the System Configuration
Utility, clear applications that you do not want to launch
automatically.