"No suitable display mode found" error for Dawn of War & DoW: Winter Assault

This is in conjunction with my other problem with compatibility issues with this game and Windows 8.1: I dummied the driver to allow my graphics card which worked for Dark Crusade).

But on the earlier games stated in the title, it succeeded only in getting to the configuration stage where (after selecting my graphics card) it states:

No suitable display modes were found

Background:

I recently upgraded my computer to a Windows 8.1 HP Envy. The games installed fine. However when I tried to run the game it failed with the 'Spooge Driver' error message in my previous question. (Dawn of War, DoW: Winter Assault and DoW: Dark Crusade) all gave the same error.

This is now fixed for Dark Crusade but did not work for the first two. The fix was an edit to the Driver folder in the Direct X directory in the Dawn of War files

I have tried running in Compatibility Mode (XP) to no avail.

So, what can I do to get a 'suitable display mode' and stop Windows 8.1 throwing that error?

Quick computer Specs:

Graphics card Nvidia Geforce GTX 760 (192-bit)

16 GB RAM

Beats Audio

Brief Update - I have Upgraded to Windows 10 and all the compatibility options wont work.

Solution 1:

I have found a Link on Steam that answers my question perfectly:

Own Boxed Copies of DoW? Get Free Steam Keys

With the shutting of Gamespy servers, we have been migrating our players over to Steam.

However if you purchased box versions of the game and do not own the game on Steam, you do not need to re-purchase the games.We are supplying owners of boxed copies with free steam keys so you can continue to enjoy the DoW franchise without paying again.

You can request your steam keys by filing a ticket through the following page:

https://support.sega.co.uk/hc/requests/new

Please note that Sega will need to verify your boxed copies, this may involve them requesting photos of your box or other information. Due to the volume of requests it may also take a few days for them to reply - we apologize this and thank the community for it's patience.

We did not want to see DoW end with the closure of the Gamespy servers, and are happy to see that our players are still quite passionate!

Here is the original Link to the steam community Forum.

So as I have the boxed versions of the games with the license keys I will be able to request a new installer.

thanks for all of your help on this issue. Its much appreciated!