I have already tried the other DIMM slots, the ones I am using now are those specified in the manual for two DIMMs. I have not tried clearing the CMOS.
FYI, right now the only cables connected to the Motherboard are the 8-pin ATX 12V power connector, the 24-pin ATX power connector, the CPU Fan into its 4-pin power connector, the Optical Drive into SATA3_4, and PLED +&-, HDLED +&-, PWRBTN, and RESET to the System Panel Header.
As for the shorted switch idea, what could cause that to occur? It was working fine before I removed the old board. One difference is that the old board had an ASUS Q-Connector for easy mounting of the System Panel Header connections.
I already checked for extra stand offs on earlier advice. However I just had a thought, the I/O Panel Shield on my old board had a soft protective backing while the new one does not. Could that be causing a short?
Core i7 920, Asus P6T, GTX 760, Corsair XMS3 12GB RAM, WD 2003 Black, WD 1501 Black, WD 640 Black, LG GGC-H20L Blu-ray/HD DVD, CORSAIR 650TX, Sunbeam CR-CCTF, HP LP2475w, Logitech Z-5500, steelseries Apex 350, Logitech G500s, CM 690, Win7 Ultimate 64bit