Since you are not using wired Internet you might just have to disable the onboard wired network card through device manager...
START>right-click "my computer">properties>hardware tab>device manager
Next to where it says, "network adapters" click on the "+" sign, and under that, right click on the network card/s that are NOT your wireless adapter and disable them.
There could also be something in the "start up" programs list that is causing it.
Click START, click RUN, type MSCONFIG and click OK....click on the "start up" tab and try to find anything that resembles Marvell Yukon 88E8040 PCI-E...If you find it, uncheck it, click "apply", click OK, and restart your computer and see if the problem is gone
edit: It might also be this: Click START, control panel, be sure you are in "Classic View" and click on "network connections", when you see the Marvell Yukon network adapter, right click on it and click properties, then at the bottom of the box, uncheck where it says, "Notify me when this connection has limited or no connectivity" and click OK