I may be stupid, but first I thought it was a temperature problem, now you're asking about wattage?
If it's wattage you should be good. Just don't sli or go any higher. You've got enough for what you have, just running with what I can remember off the top of my head.
But what exactly are you asking? You talked about Intel, then your graphics card, I can't really try to approach any suggestions because I'm afraid I'd be too broad, like
"Have you tried turning it off and on again? "