CPU - AMD Athlon II X3 440 3.0GHz Triple-Core AM3 95W
MB - ASRock M3A770DE: Socket AM3, 770 Chipset, ATX
RAM - G.SKILL 4GB (2 x 2GB) DDR3 1333
Video card - Sapphire Radeon HD 5770 1GB
HD - Samsung F3 500GB SATA II 3.0Gb/s
DVD - LITE-ON Black 24X SATA CD/DVD Burner
PSU - SeaSonic S12II 520W 80PLUS BRONZE Certified
Case - Rosewill CHALLENGER ATX 2 x 120mm + 1x 140mm fans
Cooling - AMD CPU Stock Cooler included with CPU
OS - Windows 7 64 bit
Installed all hardware and did not get any boot/video. Came to this website and read through troubleshooting guide and performed all the steps.
Major trouble shooting steps:
1. Tested PSU output with digital multi meter according to no boot/no video checklist. All voltages check out when shorting the green and black wire. Also got 12V on yellow when I connected the PSU to the MB with both connectors.
2. Tried to power up with no RAM, no video - result was no beeps from speaker.
3. Tested speaker using a 1.5 volt battery to make sure it was operating - no problem found with speaker.
4. CPU fan is plugged in and working.
What should I do next? Is it a potential MB or CPU issue? Is there a way to narrow it down before shipping the products back to exchange?