... to install DirectX 3.0 and later on, Diablo 1. That's because if you install a video driver from Windows 3.1 (but used in Windows 95), there is no hardware acceleration nor DirectDraw support.
The Diablo 1 CD included also a "Test your PC" feature, and beside the fact I didn't had a Pentium 60 (at least) installed, it needed also a CD-ROM with 300kps minimum data rate and ... tataaa ... a DirectX compatible driver/card.

I was soooo close to it, see my photo: