Quote: " I use the standard IDE for DB Classic (the one that comes with it)"
Ughh! You're a damn sight braver than me then!
In Windows Explorer, go to
C: \Program Files\Dark Basic Software\Dark Basic
[Edit] Damn smileys (ignore the space)
and double click on xdarkedit.exe. It's an old version, but a bit more fitting for programming in the 21st century. Lol.
When you've seen how much easier life is with it, create an icon on your desktop and go searching on the TGC web site for the latest version.
What's more, you can then set the system options as described above and if you're really lucky your programs might now run!
TDK_Man
PS: I'm still leaning towards it being either a GFX card driver or DirectX issue and would re-install them both (GFX card driver first). In fact, with that card, I would try installing DX8 over the top of DX9 - the worst it could do is not work, so no difference to what it's doing at the moment!