my tip for the blue screen
when you restart after it happens and you get the 'this system has recovered from a serious error - send error report' box, click 'send error report'. i had a blue screen come up occasionally for ages, and i always ignored the dialog after restarting. but then i actually did what it was asking me, and it solved the problem (by updating a driver)

maybe that doesnt help, but im in a mood for dishing out random advice today...