BSOD encountered. What is the cause? How to solve the problem?

[pcwin]

My screen has blue screen appeared.

I use bluescreenview to see the properties and it says Caused by Driver dxgkrnl.sys

Here are the screenshots

HWMoniter

When I am sufing the net in browser, sometimes I see black cubes/rectangles appearing. I have updated the video card drivers but the cubes/rectangles still appears. Today is the first time I encountered bluescreen. Is my video card (AMD Radeon HD5770) going to spoil? Or is the bluescreen caused by something else?

Thanks

 

[Pauly]

Have a look at http://www.sevenforums.com/bsod-help-support/96879-blue-screen-death-bsod-posting-instructions.html and post your files