Hi newcomer and welcome to the Tom's hardware forum.
We need more details for can help to u in the best way.
1- What are the specifications of ur rig?
2- Do u get some specific error? BSoD?
3- What OS do u have?
I dont get any error message it only gets hangs up as soon as the main screen is displayed.
some of my friends say that its because of excess heat generated by the chips. and i find that if i keep the motherboard outside and place near to a cooling system then it doesnt hang up.
but i need a technical and permanent solution