Sandy bridge build not working :(

[piXel]

So i built together

Asus p8p67
I5 2500k
2 x 2gb Ripjaws 1600 mhz
Corsair 650 watt TX v2 psu
GTX 260
Im using 2 HDD's both sata
and a sata dvd drive

I turn the PC on and i get no video signal too the monitor, the PC turns on for about 5 seconds then powers down and starts up again and just continues running.

I cant hear a bios Beep sound either.

Anyone got any idea on what i should i do?

 

[piXel]

The red DRAM light is on, so is a memory issue im having?

Wait i got it running with one memory module. is it to do with the memory needing to be set to 1333mhz?

 

[jstutman]

push the memory compatibility button?

 

[piXel]

There is a mem compatability button ?

Its working now anyway i set the bios too 1333 mhz then put the other ram stick in and its all good, i had problem installing windows 7 though my god ended up having to disconnect all the hard drives but the main one, that is so retarded.