Having problems trying to run Construct video-related

When I start up Construct and try to create a new game, I get this error message:

"There is not enough video memory to open this frame editor. Please close some other editors and try again."

First thing when I click "New Direct-X Game". No idea what that's about. And secondly, when I try to open one of the old .exe files I created before, I get THIS message:

"Construct encountered an error in the display engine:

Failed to initilise Direct3D 9!"

And from using the DirectX installer I have, it INSISTS there's nothing more to be updated. I'm not sure what I should be Googling to download. Just as confused about that one.

Does anyone know exactly what's wrong, or how I can fix these problems?

Can you post some details on your graphics card/computer specification? I've heard that Construct is really buggy with certain graphics cards.

Also, can you run games other people have made in Construct?

The GTX series is the only batch of cards I've heard people have problems with. It sounds like your card doesn't have enough VRAM - I seem to recall at least 64 or 128mb is required, I can't remember which.

I'm not sure about this, but you also might be getting the error if you have some other application open at the same time which is using a lot of VRAM. Try quitting everything else and running construct by itself.

I've gotten that error on a laptop using an Intel GMA 950 (128MB shared from system RAM) when trying to have two instances of Construct open. I don't remember it doing that on a much older build, but that was a while ago.

The 400/500 GTX series problem messes up textures and Layer previews.

Well, nevermind all that... Apparently, the problem is that... there was no video card. And I'm not using that computer anymore.

Now I have a DIFFERENT problem, which still makes no sense. This computer DOES have a video card, and it successfully did the DirectX tests. The Direct Draw, Direct3D, and all the tests were successful. So I opened up Construct, and of course, it can create a new game. But after throwing on a sprite, a tiled background, I threw an effect onto the layer, and I got this error:

"Construct encountered an error in the display engine. Please report this problem to the application developer.

Failed to create Direct3D 9 device. (0x8876017c)"

Like I said, unlike the other computer, THIS one has a video card, so it can actually create a game. That's one step. But now, a new problem, and one that makes no sense... Why is it having problems with Direct3D when I try using ANY effects? When all the Direct tests were successful? That just doesn't make sense!