I try to rename comandos.exe to commandos.exe and still not working any help?
also try to use BEL-Loader and still not working
I use Windows 7 x64bits

Renaming the game's executable was a solution for Windows 10 because it has a game database for compatibility purposes, apparently with a botched entry for CBEL.

Windows 7 doesn't have one at all. Run the game in compatibility mode for Windows XP SP2 and run it as administrator.

Have you tried that yourself and got it to work in Windows 7? I've tried every single recommendation in the GOG forums and have yet to get the game to run in Windows 7. I've renamed the executable to something completely different. The original shortcut that comes with the game has all of the compatibility settings greyed out so that you can not modify them. With my renamed executable I created a shortcut pointing to it and could then change the settings.

I tried Windows XP SP3, SP2, Windows 98/ME, Windows 95 all with and without "Run as Administrator" and again with the desktop compositing options disabled. Every single time the game explodes with "DIRECTX 5 NOT FOUND" no matter what compatibility options are used.

I get the impression that everyone recommending things for Windows 7 64bit are actually using Windows 10 or some other version of Windows and just making friendly but untested suggestions that just happen to not work. I've yet to see anyone actually running Windows 7 state that they have the game actually working. :)

This game is just totally broken on Windows 7 period as far as I'm concerned.

GOG set this to achieve optimal performance for some games lately. This can be altered in the same Compatibility tab in the file's properties, but with the "Change settings for all users" button at the bottom. Do this with an un-renamed executable, though. If all else fails, use the Ultimate Fix (for Behind Enemy Lines, you need the files that don't end with _mp. Overwrite, of course). You think wrong :P On Windows 10 I may be at the moment, for one, but I did use Windows 7 enough to run many old games on it.

But what is important for this specific issue is if someone is running it on Windows 7 64bit right now. Not if they happened to run "many old games" on Windows 7 some number of years ago. I can run the majority of games on Windows 7/x64 right now but that's irrelevant as to whether or not this one specific game can be made to run right at this instance in time on it by someone using the OS still today who has not moved on to Windows 10.

"I think I kind of sort of remember getting this game to work 5 years ago on Win7/x64" is a nice thought, but not totally helpful to someone having the problem right now unless someone can confirm concretely that they get it working right now right on Windows 7 and not just "I think" or "I seem to recall".

Still haven't found anyone that has it working on Windows 7 right now with concrete steps to make that happen.

I've got good news and I've got bad news... first the bad news... :)

Yes, I did try what you said, as well as every other single piece of advice I was able to find in the forums here, on Steam and elsewhere online. I carefully tried out one thing, tested it, then reverted it if it did not work. If someone's advice involved doing multiple things including things I tried previously they I repeated the test with multiple things. Unfortunately not any of them worked.

Now the good news. I found a solution on my own by pure magic, and I have been able to switch it back and forth to conclusively determine that this one change has fixed the problem. It is however incredibly bizarre. What might this oddity be you might ask? :oP

SHORT ANSWER: The problem is caused by multi-head being active.

LONG MYSTERIOUS DANGEROUS SUSPENSE-FILLED ANSWER: :oP

I have 4 displays hooked up to my computer including:

1) Dell U3011 30" @ 2560x1600 (Primary display)
2) Dell 2405FPW 24" @ 1920x1200 (Left)
3) Dell 2405FPW 24" @ 1920x1200 (Right)
4) Toshiba 65" TV @ 1024x768 (Far right)

Arranged from left to right as: 2 1 3 4

The most frequent software arrangement is configured to dual-head mode with display #1 and #3 in the above list enabled, and that is how the displays were configured while trying to run this game. Yesterday I tried out another game - GUN which I won in a giveaway and unfortunately that game came up with the audio working but a black screen and I could not get it to work at all either - but just the display.

I did some googling around for GUN and fired nothing but blanks (sorry, couldn't resist). As a last ditch test, I decided to fire up the AMD control center and disable my secondary display leaving only the primary running. I tested out GUN and magically the game's graphics worked. "Ok" I thought, "that is pretty damned odd" because I have been using multi-head setups for 3 years like this with 2 or 3 monitors running or 1-2 monitors + the TV running almost all the time and I have ran literally hundreds of games during this time and not once have I ever encountered a game that screwed up in any way while multiple monitors were simultaneously enabled in multi-head mode.

Until now.

So, I turned multi-head back on and tried GUN and it didn't work again. Turned it back to single-head, GUN works fine. Ok, "problem solved". Not a big deal, just change to single head when I want to play that game, or if I'm lazy - set up a custom ATI application settings for that game which automatically switches to single head when it is launched.

Today I saw Commandos in the list and thought "hey.... I WONDER...". So I fired it up and voila - Commandows comes up instantly no problems whatsoever in single-head mode. So I shut the game down and start it up a few more times and it works no problem each time. I shut it down and switch to dual-head mode, fire up Commandos -> "DIRECT X 5 NOT FOUND!". That error makes absolutely no sense whatsoever, and I can only imagine now that the error message is completely bogus, and that the game is crapping out due to multi-head being active and the game code not being able to handle that and going to display an error but having bad error handling which causes it to display a bogus error message possibly from some other error condition it has built in. In other words, it appears as if the game not only doesn't work properly on multi-head systems (or at least not on mine), but the error handling catches it and has a bug that displays the wrong error.

So, I go back and forth from single to multi a few times and even triple-head, testing the game each time - game works in single-head mode, game does not work if any kind of multi-head is active. It's hard to say if it may or may not encounter this problem for other people with multi-head but it happens here, and the solution is to disable multi-head temporarily when playing the game.

I hope by posting this here that it might help someone else to find a solution who try everything imaginable that they stumble upon online which doesn't happen to work for them also. My guess is that there are a number of completely separate and probably unrelated problems that the game can encounter when it is starting up, and that the error handler is simply buggy and displays the same bogus error message about DIRECTX 5 for all of them even though it probably has nothing at all to do with DirectX 5. Considering the game appears to actually use DirectX 7 anyway that's not surprising. :)

Anyhow, thanks for the suggestions. I've submitted a support solution to GOG support so they can add it to the support database for this game in case anyone else hits the problem.