Devices with yellow exclamation marks

I am having some problem in my windwos vista atheros ar5007eg, I have useld all the types of remedies but no use. It is showing exclamation mark as it is in the below image.

Please someone help me.Device manager screenshot.jpgwireless channel jpg.jpg
 
List any Problem devices
  • Make sure devices are connected and powered on
  • Click Start->Run, enter: msinfo32. Click the + sign next to Components to expand it
  • Click Problem Devices. Anything appear?
  • If yes, click on it, Ctrl-A to select all, Ctrl-C to copy it, Ctrl-V to paste into next post
  • On the other hand, if no devices are listed, tell me so
Generate and attach a DirectX report
  • Click Start->Run, enter dxdiag and click OK
    ===> If you’re running 32 bit Windows, dxdiag will launch on its own
    ===> If you’re running 64 bit Windows, you’ll see 64-bit DxDiag. Click it to launch the 64-bit version of dxdiag
  • Notice progress in lower left window corner
  • When done, click Save Information button and save as a text file to your Desktop
  • Attach it to your next post by clicking the Upload a File button
 
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