So i bought new ntb with Win 8. everything was working fine. but after time i decided to update to 8.1. first time it failed for some reason but the second attempt was succsefull. well. after update most applications using internet stopped working correctly. most of time it says that im not connected to internet. but i tottaly am. i can use web browsers but for example Steam was saying that it doesnt have connection to Steam network. as well as Java update says that it cannot update without internet connection. i can see that im connected, i can use web browser, everything was working fine before. can someone help ?