We need the error code from the blue screen. To get that, right click on the computer icon on the desktop, got to properties and click on extended properties in the left menu (or something like that, im on a german windows
) Un-select the automatic restart after error there, way for the next crash and see what it says. We need the message and the first cryptic code.
There is actually a crash report somewhere on your disk already, but it's better to change the setting anyway.