Author Topic: Failure to Boot - ASUS TUF Z270 Mark 2  (Read 1791 times)

Delta2187

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Failure to Boot - ASUS TUF Z270 Mark 2
« on: January 21, 2017, 10:41:39 AM »
PSU attached (EVGA SuperNova 550 GS). 24 Pin and 4+4 pin connectors to MB. 2 8 GB DDR4 RAM installed (slots 2 & 4). Intel 7700 CPU and CPU cooler installed, SSD installed. Power on PSU - green SB_PWR led lights, no fans moving,

5 Orange lights - AULED 4, 5, 6, 7 & 8 are on. What does this mean? I haven't been able to find any mention of those LED's in the user manual, on the ASUS website, etc.

Ari Altman

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Re: Failure to Boot - ASUS TUF Z270 Mark 2
« Reply #1 on: January 21, 2017, 11:13:59 AM »
Welcome to the forum, Delta2187.

So first rule, don't panic, this is pretty typical for a first attempt at powering on!

The fact that the fans are not moving, however, indicates this isn't the experience so many other TBG readers post about on their first try powering up. That actually indicates the board isn't fully powered on. The SB_LED is the standby power LED, and could very well be lit even when the system is off. Basically, your system isn't turning on at all. Even with no drives or RAM installed, a system will power on, so they aren't the issue, nor is the video card. An improper CPU installation could cause this, although my guess is a power cable. I would make extra certain that both your CPU and motherboard modular power cables are properly connected both at the power headers on the board and at the power supply. By the way, the AULEDs are decorative LEDs that make up the Aura lighting system. They are not functional and aren't intended to identify problems.

Just one note on troubleshooting: the issue you're having is rarely related to motherboard defects, so you always want to provide all your specs. You provided most, but not all the pertinent specs, and while I can guess at what you used if you followed one of the builds this month that used this board, it would help me and others to know all the specs.

Delta2187

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Re: Failure to Boot - ASUS TUF Z270 Mark 2
« Reply #2 on: January 21, 2017, 10:27:05 PM »
Ari,

I appreciate your prompt response and apologize for the delay in getting back to you again. I determined (with the help of the EVGA tech support folks) that the powersupply is indeed at fault. They were great (also) and the replacement should arrive in a couple of days.

Thanks,
Tom

Ari Altman

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Re: Failure to Boot - ASUS TUF Z270 Mark 2
« Reply #3 on: January 22, 2017, 09:06:25 AM »
Ari,

I appreciate your prompt response and apologize for the delay in getting back to you again. I determined (with the help of the EVGA tech support folks) that the powersupply is indeed at fault. They were great (also) and the replacement should arrive in a couple of days.

Thanks,
Tom

Good to know you got this figured out, and also good to hear that EVGA came through with its usual top-notch service. While dead-on-arrival PSUs are rare, they do happen, and EVGA is the company you want to deal with when it does. I was actually going to post this morning suggesting you use the included EVGA power-on self test device that comes in the box. Is that how you determined it wasn't working?