I gave it another go, formatted the PC using Win7 Pro, reinstalled the driver and... black screen over DVI-D. I then booted into safe mode, uninstalled the graphics driver and after rebooting it, I tried the latest official drivers. No dice, still wouldn't get a picture. At least now I knew there wasn't a problem with CRT Emudriver. Uninstalled the driver, rebooted, installed AnyDesk so I could connect and see what was going on, and reinstalled CRT Emudriver. Of course I lost signal immediately, but connecting remotely allowed me to actually see my Desktop, so I just proceeded with generating modelines, plugged in my homemade VGA to SCART cable and it worked like a charm. Flashed with ATOM-15 1.6 and now I get safe 15KHz resolution during the whole boot process on my 14" RGB modded CRT. It's a shame I can't get DVI-D to work, though. I really wanted to use the LCD monitor for things like Fightcade2. The only weird issue I have now is related to 640x480i resolution. While it works fine on desktop mode, any game using 480i will get out of sync, but 2560x480 works great.