It's far more likely that the blue screen is down to a badly written device driver, or part of Vista-64 crashing itself. If it happens intermittently but quite often, then it could be a hardware fault - but if it's just a once off, or even just every couple of weeks then I wouldn't be too concerned.
Next time, if there is a next time, write down that number at the bottom of the screen and do a google search for it. You'll often find a reasonable explanation for these error codes - even posting the error codes here would let someone look it up and offer some advice.