ASUS Sabertooth CPU_LED/No Post/No Boot

Hi everyone, I have a new build I was just putting together and as I got the last of the build together & plugging in the power a few things did not go as they should have.

PC :
Case - HAF 932 Coolermaster
PSU - 850 watt Antec quattro tru power
Hard drive - seagate barracuda 500GB 7200 rpm
DVD Drive - ASUS Basic
Motherboard - ASUS Sabertooth x58 P67 Motherboard with Thermal armor
CPU - Intel Core I5 2500K
RAM - G SKill Ripjaws 4gb x 2
Operating system ( Cannot use until below problem is fixed) - Windows 7 Pro 64 bit

Im using stock CPU cooler. The main concern is the MOBO/CPU.

#1 - I plugged the power into the PSU & flicked the switch to on and next got the DVI into the new video card slot I turned on the computer, at first I had nothing and about 6 seconds later it came on, but nothing on the screen just black, Nothing else is plugged in other than power and a monitor cable, the lights on the case come on along with the fans inside the computer, I'm not sure what the issue is here but it could partain to the second problem below. Just to say I get no post, and just a solid black screen with a yellow light on my acer monitor.

#2 - As stated in the first problem once the computer was on I had a red LED which from the ASUS manual names it as a " CPU_LED " which means something is clearly not working with the CPU or the Motherboard, I've checked the 24 pin power and the 8 pin to the Motherboard, both are solidly connected but to no avail I get zero post or boot. I have reset/placed the processor in multiple times to make sure it is seated properly but nothing changes. I have taken out ram and unplugged the graphics card but again nothing.

I know this is alot of text to read but anyones help/concern would be greatly appreciated by me.


6 answers Last reply
More about asus sabertooth cpu_led post boot
  1. Anybody have any ideas? Or just RMA?
  2. vsniper90 said:
    Anybody have any ideas? Or just RMA?

    I have a very similar problem with pretty much the same components on a ASUS P8Z68 Deluxe MB. Where you or anyone ever able to figure this out?
  3. No, I'm sorry. what I ended up doing was an RMA and well that seemed to have fixed the CPU problem, but not the RAM problem im having now : - (
  4. This is the exact problem I have :(
    What do you think I should do?
  5. I have the ASUS Sabertooth P67 As, Mine worked right out of the BOX is there any way I can help.
    One thing to check if you are having RAM issues is that Your RAM modules are installed starting with the 2nd and 4th RAM slot from the CPU side not the 1st and 3rd slots.
    Intel changed the way you install the RAM in motherboards with thier chipset starting with the P55 chipset. that might get your system to post if you try that.

    Just a suggestion if you did not try that configuration to start.
  6. Hi, I ended up swapping out the power supply and the motherboard booted up with no problem. The original power supply was defective and not supplying consistent power to the MB. Thanks for all your help.
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