You can go to reliability center, just click start and type reliability and it should show the option. You can click each bsod and it'll say a bccode. This will help to identify the problem. Alternatively you can also use bluescreenview, which is a bit easier to use and will also say what file caused the bsod. http://www.nirsoft.net/utils/blue_screen_view.html
If it points to the kernel, it's most likely a hardware issue. Then we can help to narrow down what hardware. Otherwise a software issue is much easier to solve.