Google for minidump reader, there's both the Microsoft way and third party programs for less geeky people.
By experience I'd also check for possible overheating problems. Laptops tend to suck dust and debris like a vacuum cleaner and it is not unusual to find a thick felt between the fan and the cooler fins. Hopefully your laptop has an easily detachable hatch over the fan and cooler. If so, detach the fan and remove all debris. Some laptops require removing the keyboard and some disassembling the whole case for cooler maintenance. If the task seems to be too difficult, just blow compressed air in short bursts into the output grill of the cooler and use a needle or tweezers to pick debris out from the intake grill. You can also use a vacuum cleaner for the intake. After cleaning, you can check the result by looking into the output grill to see, if you can see the light coming through the intake.
Naturally, before doing any maintenance, shut down, unplug from the mains and remove the battery.