This article was previously published under Q189670
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When you attempt to install Windows 98, you may receive the followingerror message:
Windows 98 requires a computer with a math coprocessor.
You may receive this error message even though your computer contains amath coprocessor.
This behavior can occur if math coprocessor support is disabled in DeviceManager.
To resolve this behavior, follow these steps:
Click Start, point to Settings, and then click Control Panel.
On the Device Manager tab, double-click the System Devices branch to expand it.
Click Numeric Data Processor, and then click Properties.
On the Settings tab, click the "Always use the numeric data processor" check box to select it, and then click OK.
When you are prompted to restart your computer, do so.
To work around this behavior, use the setup /nm command. The /nm switch bypasses the minimum hardwarerequirement test. This tests for a minimum of a 486/66DX central-processing unit (CPU) and 16 megabytes (MB) of memory and thepresence of a math coprocessor.