Just today I am having a problem getting one long beep and two short ones. There is no display but I am receiving power to all fans and usb ports. I have not had a problem in the past 4 months since I built it. Here is my setup.
motherboard = GIGABYTE GA-970A-D3
CPU = AMD FX-8150
GPU = GIGABYTE Radeon HD 6850
RAM = 32GB (8GB x 4) Komputerbay
PSU = Coolermaster 650W
LG BD-ROM drive