HP dx2310 Service Reference Guide: HP Compaq dx2310 MT/dx2318 MT Business PCs, - Page 74

Control Panel, Num Lock, Problem, Cause, Solution

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Troubleshooting Without Diagnostics Problem Cause Solution Computer date and time display is incorrect. RTC (real-time clock) battery may need to be replaced. ✎ MConnecting the computer to a live AC outlet prolongs the life of the RTC battery. First, reset the Date and Time Properties in the Control Panel (Computer Setup can also be used to update the RTC date and time). If the problem persists, replace the RTC battery. See the Hardware Reference Guide on the Library CD for instructions on installing a new battery. Cursor will not move using the arrow keys on the keypad. 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. The Num Lock key can be disabled (or enabled) in Computer Setup. Poor performance is experienced. Processor is hot. 1. Ensure airflow to the computer is not blocked. Leave a 4-inch (10.2cm) clearance on all vented sides of the computer and monitor to permit required airflow. 2. Ensure fans are connected and working properly (some fans only operate when needed). 3. Ensure the processor heatsink is installed properly. Poor performance is Hard drive is full. experienced (continued). Transfer data from the hard drive to create more space on the hard drive. Low on memory. Add more memory. Hard drive is fragmented. Defragment hard drive. Program previously accessed did not release reserved memory back to the system. Restart the computer. Virus resident on the hard Run the virus protection program. drive. Too many applications running. 1. Close unnecessary applications to free up memory. 2. Add more memory. Service Reference Guide 490778-001 D-3

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Service Reference Guide
490778-001
Dā€“3
Troubleshooting Without Diagnostics
Computer date and time
display is incorrect.
RTC (real-time clock)
battery may need to be
replaced.
āœŽ
MConnecting the
computer to a live
AC outlet prolongs
the life of the
RTC battery.
First, reset the Date and Time
Properties in the
Control Panel
(Computer Setup can also be used to
update the RTC date and time). If the
problem persists, replace the RTC
battery. See the
Hardware Reference
Guide
on the
Library
CD for
instructions on installing a new
battery.
Cursor will not move
using the arrow keys on
the keypad.
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. The
Num
Lock
key can be disabled (or
enabled) in Computer Setup.
Poor performance is
experienced.
Processor is hot.
1. Ensure airflow to the computer is
not blocked. Leave a 4-inch (10.2-
cm) clearance on all vented sides
of the computer and monitor to
permit required airflow.
2. Ensure fans are connected and
working properly (some fans only
operate when needed).
3. Ensure the processor heatsink is
installed properly.
Poor performance is
experienced
(continued).
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 is 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 the virus protection program.
Too many applications
running.
1. Close unnecessary applications to
free up memory.
2. Add more memory.
Problem
Cause
Solution