Hi Sylvia,
the thread is the same I posted in my 2nd answer with not effect.
But here the facts:
- AA number and Serial number of the motherboard: I sent it back, it was a bulk DH87RL
- Processor model: i7-4771
- Memory manufacturer and part number: Kingston hyper X 4x 4gb KHX1600C903K4/16GX
- Wattage and model of the power supply installed: 500W Cooler Master
- Model number of the PCI-e devices installed: only a gigabyte 670 GTX and 460 GTX to test
- Any additional peripherals: none