Hey, I just purchased a Gigabyte R9 270X and tried installing it into my computer. When I power it on, there is no BIOS beeping sound nor anything showing besides the fans and lights switching on on my computer. I fixed back my previous GPU which is a HD 6870 and I'm able to power on the system just fine. My power supply is coolermaster GX-650W and should be able to handle the requirements of the 270X. Any one has any idea whats going on? Do help!