Ok...first, if the game looks "jaggy and cartoony" then you need to apply the fixes I suggested about the shortcut executable and changing the options for Display scaling and Desktop composition.

Now, as to your system. I understand you may have had luck running these other games, but Divinity 2 is the game in question.

I read the specs and I see the data in your DXDiag was incorrect (it is a 7550 CPU, not a 7500), so yes, the Ghz is changed. It is hard to give correct info when the DXDiag is listing incorrect data.
But, lets move past the CPU, and go to the video card again.

Noting another sites specs, it shows your card ranked against 2 GENERATIONS of video cards.

http://www.notebookcheck.net/NVIDIA-GeForce-GT-130M.13789.0.html

Your card BARELY beats a 7x series Nvidia card. So, this is still WAY BELOW recommended specs.

As to the starting video, there could be a lot going on here. For example, do you have any external video codecs installed? Xvid codecs for example? Those can cause issues.

I have tried my best to explain the situation, but as long as you are stuck on the fact that your system can run other games fine, you will only continue to have heartache here.

The game is not optimized very well, and YOU will have to make an effort to try some various tricks and changes to get it to run decently. But, based on that video card, I really do not expect much performance.

Sorry.