Computer hangs up after updating graphics card in Win 7

I am using windows 7 32 bit, the graphics card of my computer is Standard VGA Graphics Adapter. This graphics card can't play 3D games so i updated my windows for graphics card...The updated was successful and i could play 3D games and all...But after few minutes it hangs my computer and the windows is not i shut down the computer and restart again....This time the windows is showing "Intel Graphics Accelerator Drivers for Windows(R) stopped responding"....What does it mean?? Is it wrong with my graphics card or by the windows? Please Help!!!

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