I Just got the motherboard and parts. During initial assembly/breadboard (on top of box) the system could not get past POST. The DR DEBUG display repeatedly cycles 10,15,19... 56,46,... 31 (pause, restart) ; (Note that "..." means "one or more codes displaying too fast for me to recognize").
I tried different memory configurations (I have two 4gb sticks) but that made no difference. I removed, inspected and re-installed the CPU, finding no problems. I have repeatedly cleared the CMOS to no effect. I installed and removed graphics cards (and cleared cmos) to no effect.
I have repeatedly checked, unplugged, and re-plugged the power connectors
I am completely stuck. The codes we've seen appear normal, except for the "56", meaning invalid CPU type or speed, which is, to say the least, ominous - but the boot does not fault at that point - it just reboots after the 31, which is memory successfully installed. Any ideas or suggestions?
For the record, this is my buildPart list permalink
/ Part price breakdown by merchantCPU: Intel Core i5-2500K 3.3GHz Quad-Core Processor
($199.99 @ NCIX US) Motherboard: ASRock Z68 Extreme3 Gen3 ATX LGA1155 Motherboard
($129.86 @ Newegg) Memory: Patriot G Series Sector 5 Edition 8GB (2 x 4GB) DDR3-1333 Memory
($24.99 @ Microcenter) Video Card: PowerColor Radeon HD 6870 1GB Video Card
($144.99 @ NCIX US) Case: Cooler Master HAF 912 ATX Mid Tower Case
($49.99 @ NCIX US) Power Supply: XFX 650W ATX12V / EPS12V Power Supply
($54.99 @ NCIX US) Total:
hard drive from old PC.(Prices include shipping and discounts when available.)(Generated 2012-01-11 19:59 EST-0500)
I also RMA'd the motherboard and got a new one, which also has the same problem.