I do not know why you created another thread for this..
Honestly you've done more damage than you should have, which was none.
It's overheating too fast, which means you've damaged more parts of the motherboard, or else you've done the X-Clamp fix wrong. This is the second thread you've made of this when you could have bumped the other one.
You need to take the mod off once more, and possibly try it using a different guide. Whatever guide you're using obviously doesn't work or else you've just done it wrong.