Error: In order to upgrade this version of Windows...(due to BIOS).

Error:


In order to upgrade this version of Windows, you must run Setup in MS-DOS Mode.

Cause:


This error occurs when running Windows Setup from within Windows 95. Setup determines that the Plug and Play device
BIOS on the computer is not supported. Since Setup cannot disable Plug and Play BIOS from within Windows 95, the user is prompted to run Setup from DOS.

Solution:


Exit Setup and run it from the MS-DOS prompt or from an earlier version of Windows..

Run Windows 95 setup from the MS-DOS prompt: