here's my problem :
I have Ga-Z77-D3H , Intel Core I5 2400
Starting PC with two sticks of RAM OK 2X4GB HyperX Genesis
Starting PC with two sticks of RAM OK 4GB HyperX Genesis + 4GB HyperX black
Starting PC with one hyper x Genesis 4GB only ---> OK
Starting PC with one hyper x black 4GB only ---> Boot failed , pc keeps power on and off
I have Ga-Z77-D3H , Intel Core I5 2400
Starting PC with two sticks of RAM OK 2X4GB HyperX Genesis
Starting PC with two sticks of RAM OK 4GB HyperX Genesis + 4GB HyperX black
Starting PC with one hyper x Genesis 4GB only ---> OK
Starting PC with one hyper x black 4GB only ---> Boot failed , pc keeps power on and off