Blue screen at random situations..

Hello
I have a really good (expensive) computer that been working smoothly for about one year.. after that a blue screen started to appear.. now its a lot more frequent, once an hour or so..

I tried to format the computer but my orginal windows cd cant boot (it goes to blue screen on cd boot) so i had to run a fake windows copy and manipulate the cd key to the real one..

at the moment i have failed to identify my motherboard and cannot update its driver, all other drivers are up to date..

im running windows 7 -64 bits.. tried to read the dump files but i dont understand the codes (yes i have read how to analyze them)

could any one please help me and say what i need to update/remove/change..

<3
 
"so i had to run a fake windows copy and manipulate the cd key to the real one"...
What does this mean? Can you explain a little clearer?
 
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