Windows couldn't automatically blind the IP protocol stack.

device manager->expand network adapaters. Is wireless adapter listed?

So you see the wireless networks. Wireless is working. Exact error message please.
Does it work wired instead of wireless?

In elevated command prompt:

Code:

netsh  int  ip  reset  c:\resetlog.txt

reboot your computer. Try to connect again. Works?

You may delete file c:\resetlog.txt

This is what you did.

1. At the command prompt, copy and paste (or type) the following command and then press ENTER:
   netsh int ip reset c:\resetlog.txt
2. Reboot the computer.

When you run the reset command, it rewrites two registry keys that are used by TCP/IP. This has the same result as removing and reinstalling the protocol. The reset command rewrites the following two registry keys:


SYSTEM\CurrentControlSet\Services\Tcpip\Parameters\
SYSTEM\CurrentControlSet\Services\DHCP\Parameters\

Did you install a third party firewall or virusscanner recently that may have caused the problem?