You didn't mention if your playdisc was actually in your cd-drive, so check that first :P
Also, if you have multiple cd-drives try switching the cd to another drive.
Finally, if you take a look in your Diablo 2 folder, you'll notice two execute files, diablo2.exe and game.exe. I remember that running one of these on my old computer used to generate the nocd error, while the other worked just fine. So try them both.
Also, if you have multiple cd-drives try switching the cd to another drive.
Finally, if you take a look in your Diablo 2 folder, you'll notice two execute files, diablo2.exe and game.exe. I remember that running one of these on my old computer used to generate the nocd error, while the other worked just fine. So try them both.