Check Device Manager, see if any yellow marks. Download and install the latest driver for your Wireless device/chip.
To collect IP configuration information easily, do the following:
Open a Elevated Command Prompt:
XP, Vista or Windows 7:
Click on the Start button and type cmd.
DO NOT press Enter or click Go.
Look at the upper part of the window and you will see cmd.exe.
Right click on it and select Run as Administrator.
Windows 8 or 8.1:
Press WIN + X to open Start context menu.
Select Command Prompt (Admin).
Paste the following into the Command Prompt window, exactly as shown, including double quotes:
cmd /c "ipconfig /all > postme.txt & ping yahoo.com >> postme.txt & reg query "HKEY_CURRENT_USER\Software\Microsoft\Windows\CurrentVersion\Internet Settings" >> postme.txt & notepad postme.txt & del postme.txt"
and press ENTER.
A file will open in Notepad. Please copy and paste the contents here. Close the Notepad window and the file will be deleted and the Command Prompt window will also close.