Random blue screens

For the past few weeks Ive been getting many blue screens that pop up just whenever the hell they want to. The blue screen never has the same error message either. Recently its been "INTERRUPT_EXCEPTION_NOT_HANDLED", "IRQL_NOT_LESS_OR_EQUAL", and sometimes there isnt even an error message. Its just the "A problem has occurred..." message. How the hell do I troubleshoot something like this?

You probably need to download and install www.opera.com as it doesnt interrupt your web browsing and it handles exceptions much better than other leading web browsers but uses half the RAM