The only other thing I would do would be to take everything out of the case and put together on the box the motherboard came in to rule out a short circuit.
Anymore I usually pre-assemble systems out of the case to check for errors before putting components in the case.
SeaSonic M12II 620W, ASUS M4A87TD EVO AM3 AMD 870, AMD Phenom II X4 925 Deneb 2.8GHz, Crucial 8GB (4 x 2GB) DDR3 1333, SAPPHIRE Radeon HD 6850, Kingston HyperX 120G 120GB Solid State Boot Drive, WD Caviar 1 TB Storage Drive, LG DVD-RW, Samsung SyncMaster 226bw 21" LCD, Windows 7 Home Premium 64bit