First of all, sorry for my bad english. My pc was working perfectly for about a year now, but these days it started having problems. In the past few weeks it started disconnecting from the internet with the message: you don't have a valid ip configuration. (It was working on the other pc connected to the router with lan, and on the notebook connected through wifi) A reboot of the pc/router did always solve my problem in these situations. Yesterday, my internet connection started connecting/reconnecting, and I couldn't solve it in any way, not with a restart, and not with that network repair tool (idk it's name, I have hungarian windows). When it stayed connected for more then 2 seconds I was even able to load google, youtube, other sites, I tried some solutions, like disabling the energy saver settings, setting it to 10mb half duplex, etc, but nothing worked, my internet kept connecting/reconnecting. Today I started my pc and it works perfectly.. Any ideas on how to solve it? I have the newest lan driver. My mobo is Asrock 960gm-vgs3 fx.