I beleive DLINK makes the airplus. have you donloaded the newest drivers from them. If so, perhaps try using an older driver that did work. You can also try delting the card from the device manager, reboot and see if it loads the correct drivers. If these came with a laptop, you should have received a disk with the drivers on it although these may be older, they should work.
I found it. It is DLINK Wireless Network Card giving problem. Now i removed from my machine. Problem solved. Thank you very much for your support.