DOCUMENT:Q258710  19-JAN-2001  [homemm]
TITLE   :World Atlas Err Msg: ...Invalid Page Fault in Kernel32.dll...
PRODUCT :Microsoft Home Multimedia Titles
PROD/VER:WINDOWS:
OPER/SYS:
KEYWORDS:kbenv kberrmsg kbimu

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The information in this article applies to:

 - Microsoft Encarta Reference Suite 2000 
 - Microsoft Encarta Interactive World Atlas 2000 
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SYMPTOMS
========

When you attempt to start Microsoft Encarta World Atlas 2000, you may receive
the following error message:

   Msworld5 caused an invalid page fault in module Kernel32.dll.


CAUSE
=====

This behavior can occur if the CD-ROM or DVD-ROM drive is unable to read the
Encarta World Atlas 2000 CD-ROM correctly.

RESOLUTION
==========

To resolve this issue, use the following methods in the order in which they are
presented.

Inspect and Clean the CD-ROM
----------------------------

To clean the Encarta World Atlas 2000 CD-ROM, use a CD-ROM cleaning kit, or
gently wipe the silver side of the CD-ROM with a soft, lint-free cotton cloth.
Do not use paper cloth which can scratch the plastic and leave streaks. When you
clean the CD-ROM, wipe from the center of the disc outward. Do not use a
circular motion.

If the issue continues to occur, clean the CD-ROM with a damp cloth or a
commercial CD cleaning solution. Dry the CD-ROM thoroughly before you insert it
into the CD-ROM drive.

If the issue continues to occur, proceed to the next method.

Make Sure You Are Using Protected Mode CD-ROM Drivers
-----------------------------------------------------

To make sure you are using protected mode (32-bit) drivers for your CD-ROM
drive:

1. Click Start, point to Settings, and then click Control Panel.

2. Double-click System.

3. Click the Performance tab, and then confirm that the File System entry is
   32-bit. If the File System entry is "Some drives are using MS-DOS
   compatibility", you may be using real mode (16-bit) CD-ROM drivers. If this
   is the case, you may not be able to read certain files on the CD-ROM.

   Contact the manufacturer of your CD-ROM drive to inquire about how to obtain
   and install the latest version of the protected mode CD-ROM driver for your
   CD-ROM drive.

4. Click OK, and then close Control Panel.

If the issue continues to occur, proceed to the next method.

Reduce CD-ROM Drive Caching
---------------------------

To reduce CD-ROM drive caching:

1. Click Start, point to Settings, and then click Control Panel.

2. Double-click System.

3. Click the Performance tab, and then click File System.

4. Click the CD-ROM tab.

5. Move the "Supplemental cache size" slider to the Small position.

6. In the "Optimize access pattern for" box, click "No read-ahead".

7. Click OK, and then click Close.

8. When you are prompted to restart your computer, click Yes.


MORE INFORMATION
================

If the issue continues to occur, please click the following article number to
view the article in the Microsoft Knowledge Base:

   Q218617 How to Troubleshoot CD-ROM Read Issues

Additional query words: multi multi-media media mm ewa2k ipf gpf

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Keywords          : kbenv kberrmsg kbimu 
Technology        : kbHomeProdSearch kbHomeMMsearch kbEncartaSearch kbEncartaReference2000 kbEncartaWorldAtlas2000
Version           : WINDOWS:
Issue type        : kbprb

=============================================================================

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