Problem with installing Windows 7 using Boot camp..

First of all let me mention that I already installed windows 7 (using the same copy) on two different macs using bootcamp and it worked fine.
But it's not working with my new 15 inch macbook pro (2.4 GHz intel core i5, 4 gb ram), I worked my *** off to get this computer and I'd really like it to work.

After doing everything and installing windows I get to the welcome to windows 7 window, where I can choose my location, username, password etc, but then as soon as the computer is about to actually enter the start screen the computer restarts, it happens every time I want to go to windows 7, even if I choose it manually by clicking the alt button during the grey screen. I tried re-installing it numerous times, and each time I chose different versions (x64, x86).

Like I said, I used the same copy of windows 7 on two of my friend's computers (13 inch macbook pros) and it worked fine.

Thanks in advance.

Windows 7 is only to be installed on one machine, unless you have purchased the Windows 7 family pack (sold on Amazon for $320.00). The Microsoft EULA is specific about this. We do not condone illegal activities in these forums nor do we discuss them. Sorry, you'll get no help here.