Same thing happened to me on clean win 7 install. This how i fixed it. Reinstall 7. during install, turn off auto update( i turned off my wifi to make sure) After win 7 install, install these two updates in this order;Windows6.1 -KB3020369-x64 than Windows6.1 -KB3172605-x64. I assume you have 64 bit. afthe this turn on updates. you should have most of your updates in a day. you will have to download and install the right wifi driver. i downloaded mine on my phone.