New Haswell Build Won't Start

druss28

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Sep 2, 2013
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My new Haswell build won't start!

MOBO: Asus Z87-A
CPU: i7-4770
CPU Cooler: Standard Intel
PSU: Rosewill CAPSTON-550-M
Memory: 2x8Gb Corsair Vengeance
Graphics Card: None installed
DRIVES: 1-SSD and 1-HDD

Build went clean and easy until I flipped the PSU switch. It runs for about a second. CPU and case fans start-up, red CPU LED lights up and goes out, then red DRAM LED lights up and goes out. Then all shuts down. Green Mobo light is all that is on. No beeps. Front power switch does not work. If I turn off PSU, I must wait for green light to go out and then I can try again with same results.
I disconnected drives and case fans- same result.
I pulled out memory with same result.
PSU passes the paper clip test but I know that does not eliminate it as problem.
If CPU was the problem, would I not at least hear a beep?
Could it be the motherboard?
 

druss28

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Sep 2, 2013
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The green LED is located on bottom front of Mobo. I always called it the power LED. It is the only thing showing life. I have speakers plugged in to the green jack on rear I/O panel. Once I did see the VGA LED light up, but only once. Each of the three red LED's went on the off consecutively- CPU, then DRAM and then VGA. I never saw the VGA light up again.
 

druss28

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Sep 2, 2013
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The green LED is large 1/8" dia x 1/4 hi- I believe it is the Mobo power light.
The TPU is already disabled.
You are correct about the case speaker, I installed one and now hear the beep code.
1 long and 2 short, one time- It tries to repeat but shuts down before another code cycle.
This believe this is a video error code. I don't have a card installed, as it has not arrived yet.
I thought I could simply run on on board video until it came?
 

druss28

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Sep 2, 2013
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It looks like the code long-short-short for Asus might be memory, not video (as Award bios was).
I had pulled out the memory to test and makes sense that it would code on that.
Put memory in and now no beeps. Video card arrived today. Installed with no change.
Video card fan starts up like everything else, then all shuts down.
 

druss28

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Sep 2, 2013
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Video card: GigaByte nVidia GeForce GTX650 2GB
I basically rebuilt it, even pulling the CPU- without success.
I have ordered a cheap PSU just to help eliminate PSU problem, should get it this week.
It's not Haswell certified, but I hope it will work to prove whether it's PSU or not.
Have you ever heard of a bad CPU? Could these symptons be CPU?

Update: Tested with different PSU - same result.
Pulled motherboard out of case and bench tested - no luck.
Swapped out with new motherboard and ALL IS WELL