Just the motherboard on a cardboard square. No case to possible short out the board, PSU, 1 stick of RAM, 1 video card, CPU, heatsink and the PSU. Try that.
More at THE DEAD PC on google.com
Remember some boards come with the CMOS RESET in the reset position. Did you look for that?
I am upgrading a Dell Dimension 4600 with a new motherboard, processor, memory, and graphics card. I got everything put together last night and plugged it in only to get a black screen. The tower is getting power and the drives sound like they are responding, but the OS will not boot. I did not replace the hard drive and am trying to use the one that was on the computer when shipped from Dell. The motherboard is ECS Elitegroup GeForce 7050 M-M. The processor is an AMD Phenom. The memory sticks are Corsair twin 4G. The graphics card is EVGA nVidia GeForce 9500 GT PCI-E 2.0. The powersupply is Antec 380W. I am stumped. Any help would be greatly appreciated so I can get this thing up and running.