Windows Hangs if Coprocessor Is Incorrectly Reported

 Last reviewed: November 22, 1994
Article ID: Q73797
The information in this article applies to:
  • Microsoft Windows operating system versions 3.0, 3.0a, 3.1, 3.11

SUMMARY

If a system board DIP switch setting(s) reports a coprocessor is installed and none is present, Windows 3.0 may stop responding (hang) when you insert Disk 2 during setup. (Disk 3 if installing Windows 3.1.) If Windows has already been installed, it may hang on the opening graphic screen when executed.

MORE INFORMATION

All 8086/8088 (PC/XT class) machines and many clone 80286, 80386 (AT class and above) machines use system board DIP switch settings to indicate the presence of a coprocessor. If the system board switches indicate to system BIOS that a coprocessor is installed and none is present, Windows may hang when you insert Disk 2 (or disk 3 with version 3.1). If Windows has been previously installed and is working before the switch setting is incorrectly changed, it may now hang on the opening graphic screen when executed.

KBCategory: kbhw kb3rdparty
KBSubcategory: win30 win31
Additional reference words: 3.00 3.0 3.0a 3.00a 3.1 3.10 3.11 3rdparty
KBHW

THE INFORMATION PROVIDED IN THE MICROSOFT KNOWLEDGE BASE IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND. MICROSOFT DISCLAIMS ALL WARRANTIES, EITHER EXPRESS OR IMPLIED, INCLUDING THE WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. IN NO EVENT SHALL MICROSOFT CORPORATION OR ITS SUPPLIERS BE LIABLE FOR ANY DAMAGES WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF MICROSOFT CORPORATION OR ITS SUPPLIERS HAVE BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES. SOME STATES DO NOT ALLOW THE EXCLUSION OR LIMITATION OF LIABILITY FOR CONSEQUENTIAL OR INCIDENTAL DAMAGES SO THE FOREGOING LIMITATION MAY NOT APPLY.

Last reviewed: November 22, 1994
© 1998 Microsoft Corporation. All rights reserved. Terms of Use.