Compaq 100eu - All-in-One PC Maintenance & Service Manual page 162

Computer date and time display is incorrect.
Cause
RTC (real-time clock) battery may need to be replaced.
NOTE: Connecting the computer to a live AC outlet
prolongs the life of the RTC battery.
Cannot remove computer cover or access panel.
Cause
Smart Cover Lock, featured on some computers, is locked.
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.
152 Chapter 11 Troubleshooting Without Diagnostics
Solution
First, reset the date and time under Control Panel
(Computer Setup can also be used to update the RTC date
and time). If the problem persists, replace the RTC battery.
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.
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.