Troubleshooting Guide

A–4 www.hp.com Troubleshooting Guide
POST Error Messages
163-Time & Date
Not Set
Invalid time or date in
configuration memory.
RTC (real-time clock)
battery may need to
be replaced.
Reset the date and time under Control
Panel (Computer Setup can also be
used). If the problem persists, replace the
RTC battery. See the Hardware Reference
Guide on the Documentation CD for
instructions on installing a new battery, or
contact an authorized dealer or reseller
for RTC battery replacement.
CMOS jumper may not
be properly installed.
Check for proper placement of the CMOS
jumper if applicable.
164-Memory Size
Error
Memory amount has
changed since the last
boot (memory added or
removed).
Press the F1 key to save the memory
changes.
Memory configuration
incorrect.
1. Run Computer Setup or Windows
utilities.
2. Make sure the memory module(s) are
installed properly.
3. If third-party memory has been
added, test using HP-only memory.
4. Verify proper memory module type.
201-Memory Error RAM failure. 1. Run Computer Setup or Windows
utilities.
2. Ensure memory modules are correctly
installed.
3. Verify proper memory module type.
4. Remove and replace the memory
module(s) one at a time to isolate the
faulty module.
5. Replace faulty memory module(s).
6. If the error persists after replacing
memory modules, replace the system
board.
Numeric Codes and Text Messages (Continued)
Code/Message Probable Cause Recommended Action