With a mobo speaker I get long beeps indicating no RAM. I then install a stick of RAM and get silence. Same silence occurs when I install the video card (no onboard video for this motherboard). I've tried all four slots with both of my 4GB and received the same results. I went as far as having a replacement motherboard shipped. I've also tried a much older video card (http://www.newegg.co...N82E16814102624) and met the same results. I also replaced the aftermarket fan with the stock CPU cooler just in case the thermal paste was the issue.
I've posted all my parts below in case that will assist with anything but I greatly appreciate any help or ideas that will get me to boot.
Motherboard: GIGABYTE GA-990FXA-UD3 AM3+ AMD 990FX SATA 6Gb/s USB 3.0 ATX AMD Motherboard
HSF: Cooler Master Hyper 212 Plus - CPU Cooler with 4 Direct Contact Heat Pipes (RR-B10-212P-G1)
RAM: Crucial Ballistix Sport 8GB Kit (4GBx2) DDR3 1600 MT/s (PC3-12800) CL9 @1.5V UDIMM 240-Pin Memory BLS2CP4G3D1609DS1S00
CPU: AMD FD6300WMHKBOX FX-6300 6-Core Processor Black Edition
HD: Seagate Barracuda 1 TB HDD SATA 6 Gb/s NCQ 64MB Cache 3.5-Inch Internal Bare Drive ST1000DM003
Ultra Plus - Solid-State-Disk - 64 GB
Case: Nzxt Technologies USB 3.0 Tempest 410 Steel Mid Tower Airflow Case - T410-001 (Black)
GFX: HIS H787F2G2M Radeon HD 7870 GHz Edition 2GB 256-bit GDDR5 PCI Express 3.0 x16 HDCP Ready CrossFireX Support Video Card
http://www.newegg.co...ition 2GB 256-b
PSU: SeaSonic S12II 520 Bronze 520W ATX12V V2.3 / EPS 12V V2.91 80 PLUS BRONZE Certified Active PFC Power Supply
http://www.newegg.co...2V V2.3 / EPS 1