I have no Idea then... but CPU graphics are less good as graphic cards.
It doesn't seem like it works with your CPU graphics.
You should use another codec. I would recommend you to use the MPEG-1 codec, Xvid or Motion-JPEG

Do you have another graphics card, or only the CPU graphics?

Because it is for a graphics card.

you should use the recording key instead of the button on the bandicam window.

what is the advantage of "caching on the disk"? does that minimize the size / recording lag / recording speed / etc.? when does it make sense to use it? E.g.: Long recordings, short recordings, big window resolution, small window resolution, fast PC slow PC, etc. I have another question: w...

There is a function for that, but that doesn't seem to work fine... you should maybe try to de/activate that function.
Funtion can be found:
Bandicam
-General
--Options - Advanced or Properties (whaterver there is in english)
--- General
---- show FPS in video

If you want to use Sony Vegas or Pinnacle Studio you HAVE TO use the Motion JGP codec, else it wont work. I don't know anything about those programms, but it´ll maybe work when you change the video format. You can use FormatFactory for that. But I don't know if this works. Try out! If nothing helps ...

Did you try to register?
Did you change your hard disk too?

Then I have no idea.... it could be a problem with bandicam (only happens when you record for very long)... maybe you should try the Recording-Stop function and stop recording after 30 min. and then automaticly start the recording again.
Hope I could help you.

What do you mean with physically clicking the stop record button ? Did you click on it more than once? I agree to Dfactor, who said that the stop record button is NOT meant to stop DX / OpenGL recording, because you click outside of the window you want to record (you click on the bandicam window) so...