HP Dc7700 Quick Setup and Getting Started Guide - Page 25

CAUTION, Table 1, Solving General Problems continued - bios

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Table 1 Solving General Problems (continued) Computer will not respond to USB keyboard or mouse. Cause Solution System has locked up. CAUTION: When attempting to resume from standby mode, do not hold down the power button for more than four seconds. Otherwise, the computer will shut down and you will lose any unsaved data. Restart computer. 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. See the Hardware Reference Guide for instructions on installing a new battery, or contact an authorized dealer or reseller for RTC battery replacement. 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. The Num Lock key can be disabled (or enabled) in Computer Setup. There is no sound or sound volume is too low. Cause Solution System volume may be set low or muted. 1. Check the F10 BIOS settings to make sure the internal system speaker is not muted (this setting does not affect the external speakers). 2. Make sure the external speakers are properly connected and powered on and that the speakers' volume control is set correctly. 3. Use the system volume control available in the operating system to make sure the ENWW Basic Troubleshooting 17

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Computer will not respond to USB keyboard or mouse.
Cause
Solution
CAUTION:
When attempting to resume from
standby
mode, do not hold down the power button
for more than four seconds. Otherwise, the
computer will shut down and you will lose any
unsaved data.
System has locked up.
Restart computer.
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. See the
Hardware Reference Guide
for instructions on
installing a new battery, or contact an authorized
dealer or reseller for RTC battery replacement.
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.
The
Num Lock
key can be disabled (or enabled) in
Computer Setup.
There is no sound or sound volume is too low.
Cause
Solution
System volume may be set low or muted.
1.
Check the F10 BIOS settings to make sure
the internal system speaker is not muted (this
setting does not affect the external speakers).
2.
Make sure the external speakers are properly
connected and powered on and that the
speakers' volume control is set correctly.
3.
Use the system volume control available in
the operating system to make sure the
Table 1
Solving General Problems (continued)
ENWW
Basic Troubleshooting
17