Microsoft KB Archive/73797

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Windows Hangs if Coprocessor Is Incorrectly Reported

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Q73797

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The information in this article applies to:


 * Microsoft Windows versions 3.0, 3.0a, 3.1, 3.11

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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.

Additional query words: 3.00 3.0 3.0a 3.00a 3.1 3.10 3.11 3rdparty KBHW

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Technology : kbWin3xSearch kbWin300 kbWin300a kbWin310 kbWin311