Computer date and time display is incorrect.
Cause Solution
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.
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.
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.
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 Solution
Processor is 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 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 accessed did not release reserved
memory back to the system.
Restart the computer.
Virus resident on the hard drive. Run virus protection program.
152 Chapter 11 Troubleshooting Without Diagnostics
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