game (Diablo 2)

Launched D2VidTst.exe from the folder with the game? Maybe the game in software mode.

The easiest way (for me):
1. download dgVoodoo
2. in the archive folder MS it 3 file from to throw in the game folder
3. run D2VidTst (if Win10, then in compatibility mode) and select DirectDraw (2D) mode

PS: and no they don't cause you problems

here's what it gives

Don't even know what to say. It seems that something with the drivers for the video card.
In General,do not put these assemblies nafig. From them then, usually some problems.

THIS COMPUTER CANNOT RUN Diablo II !
:DDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDDD

author, you have a video card some really bad monitor or screen resolution is only 640x480 such was in Vogue somewhere in the mid 90-ies, I guess you have it still very slow, and therefore proposes

for д2лод need at least 800x600

okts666, uncle, what is this comp anyway? netoptic of some kind?

By the way, is also garbage. Home nettop in throne start such lags that much scary.
Well, Yes, nettop, but 4GB of storage and 512MB card GeForce 560 I think.
I started to play D2 on your computer with a 4MB card and 96 meters operatives. Confuses this situation))