New build problem

[chiefcrust]

I built a new system :

Asus P8P67
Intel i5 2500
G.Skill 8GB (2x4GB) 1600mhz 9-9-9-24 1.5v
Coolermaster RealPower 700w PSU
Nvidia 210

and whenever I power on the system it will either come on for a second or 2 then power off and then power itself back on again and work fine

or

when I power on all the fans and things startup as normal but I dont get the system beep and nothing happens so I have to hold the power button in to switch it off, then when I power up again it says overclock failed, even though I dont want to overclock and all the bios settings are set to default.

Any ideas whats happening? Ive tried manually setting the RAM voltage to 1.5v and timmings to 9-9-9-24 -2N but still get the same problem.

Help would be very much appreciated!

 

[chiefcrust]

Thanks for the reply, I shall try the above when I get home from work.

I did go for the 2500 and not the K version, why was this a bad idea?

 

[chiefcrust]

Fingers crossed the problem is solved, I set RAM speed to 1333 even though its rated at 1600 and thats stopped it saying overclock failed.

And the problem where the system would turn on, off, then on is known as the asus double boot problem and was fixed by turning 'Power on by PCIe' on in the bios.

Any ideas why my RAM wont run at its specified speed though?

Thanks again.