New PC no boot, beep, video responce

I have just finished putting together my custom PC. When I turn the PC on the fans work, the lights display on the motherboard and graphics card so everything looks in order. Also the DVD drive works fine. However there is no single beep and my monitor says that there is no connection. A friend suggested that it may be due to the motherboard and processor bios being different. Any suggestions? I have double checked the connections/wires ect and there seems to be no issues. All the fans are working including the CPU fan.

INTEL i5 3570k Processor
ASUS Z77-LX V Motherboard
8GB 2133MHz G,SKILL RAM
Corsair H80i
Zalman Z11+ Case
Corsair 750W 80+ PSU
GeForce 660ti
Samsung F3 HD103SJ 1TB internal Hard Drive SATAII 32MB Cache 7200RPM – OEM
Asus DRW-24B5ST 24x Internal SATA DVD Drive