HP Compaq d220 MT Quick Setup Manual page 21

Problem
Computer appears locked
up and will not turn off
when the power button is
pressed.
Computer date and time
display is incorrect.
Computer appears to
pause periodically.
Poor performance is
experienced.
Cursor will not move
using the arrow keys on
the keypad.
Blank monitor screen.
Quick Setup & Getting Started Guide
Cause
Software control of the
power switch is not
functional.
RTC (real-time clock) battery
may need to be replaced.
Network driver is loaded
and no network connection
is established.
Processor is hot.
The Num Lock key may
be on.
Monitor is not turned on
and the monitor light is not
on.
Solution
Press and hold the power button for at
least 4 seconds until the computer turns
off.
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. Refer to the Hardware
Reference Guide for instructions on
installing a new battery, or contact your
HP authorized
reseller or service
for RTC battery replacement.
provider
Establish a network connection, or use
Computer Setup or Windows Device
Manager to disable the network
controller.
1. Make sure the airflow to the
computer is not blocked.
2. Make sure the fans are connected
and working properly (some fans
only operate when needed).
3. Make sure the processor heatsink is
installed properly.
Press the Num Lock key. The Num Lock
light should not be on if you want to use
the arrow keys.
Turn on the monitor and check that the
monitor light is on.
Getting Started
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