Windows 95 Fails to Install on an 80386 Computer (119118)
The information in this article applies to:
This article was previously published under Q119118 SYMPTOMS
The Windows 95 Setup program fails or displays the following error message:
Setup error B1: Setup has detected an 80386 processor that is not
compatible with this version of Windows. Before you can run this
version of Windows, you need to upgrade your processor. Contact
your computer manufacturer for more information.
CAUSE
Intel 386 microprocessors dated before April 1987 are known as B1 stepping
chips. These chips are known to introduce random math errors when
performing 32-bit operations, thus making them incompatible with Windows
95.
RESOLUTION
If your 386 chip was manufactured before April 1987 or has a label on it
that reads "For 16-bit operations only," contact your hardware manufacturer
about a microprocessor upgrade.
MORE INFORMATION
The product included here is manufactured by a vendor independent of
Microsoft; we make no warranty, implied or otherwise, regarding this
product's performance or reliability.
| Modification Type: | Major | Last Reviewed: | 7/28/2001 |
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| Keywords: | kbDiskMemory KB119118 |
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