This is a mostly new build - the GPU, PSU and HSF are from another system; Motherboard, CPU, HDD and RAM are box-fresh.
When the system is powered on there is no LOGO screen, no POST screen, no BEEP CODES and no BIOS.
All parts receive power and all fans are spinning.
Does anyone have any suggestions on what could be causing this?
I have tried 'forcing' beep codes by taking out all of the RAM, as well as trying the RAM sticks one at a time. I also have a speaker (tested) plugged into the motherboard, to listen for beeps. I have swapped-out the GPU for another - no change.
Unfortunately I don't have access to another AM3+ motherboard or another AM3+ CPU.
I'm totally stuck and would really appreciate some help. Thanks
AMD FX-6100 Black Edition 3.3GHz
12GB (3 X 4GB) Komputerbay DDR3 1866MHZ
Seagate Barracuda Green 2TB SATA 6 Gb/s
Tagan BZ800 800W PSU
Asus Silent Square EVO Air Cooler