Asus P8Z68-V PRO CPU LED Boot Error

I recently upgraded my machine, changing the motherboard, RAM, PSU and CPU (literally a whole new computer ).

This is it:

Asus P8Z68-V PRO Motherboard
Intel i7 2600K (After Market Cooler)
8GB DDR3 Vengeance RAM (1600)
BFG GTX 285 OCX
Powercool 750W ATX PSU
Hitachi Deskstar 500GB

Upon first boot, nothing came up on screen, not even post but all fans, hardrives etc were operational. The red CPU LED light on the motherboard was lit and then a few seconds later the computer turned off and then a few seconds after that it turned back on again with the CPU LED still lit . About 30% of the time, it boots up fine and runs windows 7 without any problems. I've tried basically everything I could think of to see what could be causing this. I've tried stripping the computer down to the bare minimum, trying different RAM setups, different PSU's, resetting the BIOS/Cmos, reseating the CPU, Re-applying the CPU compound paste, seeing if the RAM's actually compatible and a few other things I can't remember atm. I've seen a few other people on the web with the same problem but not much help came from that. Anyone got any other ideas on how to fix this which doesn't involve returning it would be greatly appreciated

Which UEFI version are you using? And also which CPU cooler?

For a debug, use one memory module in the slot furthest from the CPU and see if the POST issues persist.

-Raja

What UEFI build are you using and what memory?

Clear CMOS and see if the board will POST. If it will not, pull one memory module and place the other stick in the slot furthest from the CPU and see if that helps.

I would recommend flashing to the latest UEFI if you can get the board to POST. If you cannot, check the memory and GPU are working fine still (in another system if possible) and if need be RMA the motherboard.

-Raja

how do i know which uefi build im using? ive never gotten to the boot menu before. never done a flash. ram im using is GSKill sniper series ddr3 pc-18600. the cpu light stays on. i've reseated the processor and the heatsink. still stays on. it boots for 2 seconds, reboots, then stays on, all fans running, but cpu led still on constantly. the only thing not new is my PSU...but it worked just fine in my last computer and its a 750 watt.

NVM - deleted

-Raja

I have just built a pc from scratch today with this motherboard and have the very same problem:

On power-up the CPU fan starts and then stops and the CPU error light on the MB comes on. The CPS fan comes back on again after about 2 seconds and remains on. The optical drive and HDD are active and I have never got anything displayed on the monitor nor any POST beeps despite several repeat attempts.

I'll be contacting the supplier tomorrow to get it replaced with a non ASUS alternate.

As like others I'm extremely unhappy with this and the time and effort I've wasted today trying to fix this fault and I doubt I'll go with Asus products again.

Mike

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Same MoBo
My LED light for the cpu is on as well however I have no RAM installed (ram got misplaced from my shopping cart cart ftl) Is the cpu led on because of there being no Ram?
Thanks guys

I just wanted to share my experience with this as well. I was having the same problem as the original post. I pulled the CPU out to find that one pin was bent over and touching another. I straightened it out and put the chip back in and was able to boot to windows.