USB WiFi adapter doesnt even see a network but integrated connects 2it

I have a USB wifi antenna which is much stronger and in the menu in the lower right I dont get to choose a network which is much closer than the one which it does actually connect to, BUT the integrated wifi card in the laptop sees at the lowest signal strength and even connects to it. I didn't choose to forget that network in order not to see it in the list for the USB wifi adapter... What could be causing this problem?

dmholt57 said:

Is the onboard b/g/n and the usb dual band? More info on the adapters please.

can you elaborate? I am not sure what that means.

dmholt57 said:

The manufacturer/model, of each of the adapters will allow us to look at the capabilities of your situation.

Intel Centrino Wirless N1000
and the antenna is Chinese with Ralink adapter inside it. Is this enough info?

dmholt57 said:

Ok, the Centrino is bgn single band, only sees 2.4Ghz channels the Ralink, is it also single band?

How do I check?

dmholt57 said:

Normally, Windows will choose the strongest/fastest connection available. If you turn off the internal wifi by disable in network adapters, then enable the usb adapter, if it is dual band it will show 2.4 and 5.0 connections.

The connection I maange to connect to using the antenna is 100 meters away, but the one I want to connect to is maybe 20m away, yet it can't work. It makes no sense at all.