Onboard or external gpu? how can i check mine from windows 7?

What are you trying to check?

Go to bottom left, go to the launch bar, and type "dxdiag" and press enter. It will be opened a window whit your general specifications about your PC. THere will be a seccond tab talking about your GPU (video card) whit the info you are looking for.

in windows 7, How can i check if my laptop's gpu is onboard or not?

in windows 7, How can i check if my laptop's gpu is onboard or not?

stop opening new post and check the old one you opened up
http://www.tomshardware.com/forum/forum2.php?config=tom...

If your using a laptop I doubt very much if you have an external video card, most laptops use a mobile version of the gpu you find on external cards but soldered to the motherboard. There are external cards you can get but more hassle than they are worth. Unless I am misunderstanding the question.