How to Check for a Faulty Math Coprocessor

• Microsoft Windows 95

SUMMARY

This article describes how to use Device Manager to determine if the math coprocessor in your computer is faulty. The procedure in this article applies to math coprocessors built into 80486 and Pentium processors, and to math coprocessors that have been installed separately.

MORE INFORMATION

To determine if the math coprocessor installed in your computer is faulty, follow these steps:

1. In Control Panel, double-click System.

2. Click the Device Manager tab.

3. Double-click System Devices, and then double-click Numeric Data Processor.

4. Click the Settings tab. If the math coprocessor is faulty, the following message is displayed in the Diagnostics box:

         The numeric processor in this computer can sometimes compute
         inaccurate results when dividing large numbers.
   

   If the math coprocessor is not faulty, the following message is displayed in the Diagnostics box:

         Your computer's numeric data processor has passed all diagnostic
         tests and appears to be working properly.