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P9X79 new build booting issue

Last response: in Motherboards
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April 18, 2013 7:01:47 PM

This is my first build so please be gentle...

System as it stand right now (I've stripped it to the bare bones to troubleshoot):

Case: Corsair carbride 400
Motherboard: ASUS P9X79
CPU: Intel i7 3820 3.6 GHz
CPU Coolant: Thermaltake Water 2.0
RAM: 1 x Gb stick Corsair Vengeance DDR3 at 1600 MHz
Power Supply: Cooler Master 850w silent pro.

When I boot the CPU LED light goes on, the case fans operate and the CPU fan (cooling system) operates. This only stays on for less then a second and then cycles turning off for a few seconds. The Standby power LED remains green whenever the power is on.

I have read the troubleshooting guide on this site and have been pouring through the manuals. Currently plugged into the board is:

- The CPU fan- the wire from the cooler is into CPU_Fan, the 2 wires from the fan on the radiator are on CPU_OPT
- 1 x case fan into CHA_FAN
- 2 x 4 pin ATX power connectors into the 8 pin slot
- the 24 pin ATX power connector
- The power button, reset button, HDD LED and 2 x connections into the USB 2.0 sockets which I'm pretty sure are the case fans.
- The HD Audio into "front panel audio connector"

I took apart everything again and checked the following:

- The CPU is well seated and with no thermal paste on the pins. The pins are not bent and the plastic covering was removed.
- The coolant system is firmly seated to the CPU
- The motherboard is spaced out from the case and there is nothing behind it causing a short that I can see. I pulled the board out to check.
- The RAM stick has been inserted into the D1 slot and is firmly seated. The make and model of RAM is on the QVL for this motherboard
- All connectors are firmly seated.



As I said, this is my first build. I really just wanted to learn how to do this as I went. Any help or advice would be most appreciated.
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April 18, 2013 10:45:42 PM

Try removing your RAM stick and let me know whether you get the beep sound or not.
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April 19, 2013 3:52:23 AM

No luck there. I'm not even getting to the beep stage on this. Everything cycles on for about a second and then shuts down immediately. After a few seconds it cycles on for another second and so on...
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April 19, 2013 4:06:40 AM

Solved it. I'm an idiot and didn't line up the arrow on the CPU. I thought I did but I didn't. Flipped it around it POST successful.
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Best solution

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a b à CPUs
April 19, 2013 9:07:18 PM

Good to know that it solved. Now please close the thread by "Pick as the Solution" button.
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