Asus Strix Z270i - Issues, Red CPU LED..

[Malkan]

Hey,

So i built a new PC a few days ago and today when turning it off and moving it to a new desk, issues occured. (Rarely turn my pc´s off). After having it moved to the new desk, i plugin all the cables and start the pc - Wont POST and CPU_LED is lightning solid red. Pressed reboot button, took 5-10 sec then it rebooted and started flawlessly into windows.

I can reproduce the issue 8/10 times (tested) by turning PC off, pull power-cord out and wait 3-5 min each time, then it most likely wont post and getting stuck with red cpu led. It did happen once when i tested just rebooting system a few times aswell. I have reseated CPU + Cooler, no joy. Cant spot any bent pins, looks fine to me. I have no OC, only XMP turned on (3000mhz Corsair) rest is stock + fast boot turned off. The PC works flawlessly in Windows, been running stress-tests (Realbench) for 2 hrs. Will run overnight aswell.. Works fine in games, been playing Wildlands all week without hiccups.

I tried to reproduce the error with XMP turned off = Bios completely stock. Only tried 3 times, it booted every time fine, i will try more times to reproduce the issue with XMP off. So far with what i have tested, it seems to be a issue with xmp/bios, any suggestions? Been using google most of the day and it seems to be the exact same issue that people HAD with Asus z87-a, been reading quite a few topics about that which match my issues very well.

Specs:
Asus Strix z270i-gaming @ latest bios 0607 - Same issue on both available bios.
Intel i7 7700k (Delidded with Rockit88 delid tool) - works fine, had to be done because of 85+ temps @ stock in games, 90+ Aida64.. Now around 65c.
16GB Corsair 3000mhz ddr4 - CMK16GX4M2B3000C15
Asus GTX 1080Ti
Samsung 960 EVO 250GB M2 + 2x 250GB 850EVO.
Corsair AX1200i PSU
Corsair H100i v2 cooler
Corsair Obsidian 250D

Hopefully someone have a answer 🙂 Thanks!

[Farinasaur]

I'm facing the same problem when my brand new Strix GTX 1080 O8G is connected.

When VGA arrived, I did the installation and it worked perfectly. Tonight when I logged in my PC, a new driver update appeared and I did the update process. After restart, the PC doesn't post anymore.

The red led on my ASUS Strix Z270i gaming is solid red and the PC doesn't post. If I remove the VGA and use on-board video, everything works.

What the heck just happened? 😞 😞 😞

[Farinasaur]

Any idea about why I'm facing the red cpu QLED only when my GTX 1080 Strix is connected?

Probably memory issues as well?!

[Buellersdayoff]

Farinasaur wrote:
Any idea about why I'm facing the red cpu QLED only when my GTX 1080 Strix is connected?

Probably memory issues as well?!

Does this happen with defaults applied in the bios? Can you find primary display device in the bios and set it to peg instead of auto...just a thought

[Farinasaur]

Buellersdayoff wrote:
Does this happen with defaults applied in the bios? Can you find primary display device in the bios and set it to peg instead of auto...just a thought

Yes, it happens with defaults applied. And yes, I changed it from auto to IPEG and I'm not able to boot by onboard video if the VGA is connected. I don't know if the VGA is faulty since the CPU QLED is the one lit.

[parseInt32]

No0B25 wrote:
That was the case for me as well. Your mileage may and will vary, but I went to not using the XMP profile as is, but doing it manually. I got it working by giving the CPU voltage an 80mV plus, 1.379v for RAM (a little higher than specified) and had to actually decrease VCCIO to 0.9375v and System Agent to 1.025v. Having VCCIO and SA voltages where the overclocking guide tells them to be is unstable for me and would give me the red LED every time I'd turn the machine on.

EDIT: Oh yeah, and the update brought a nice addition to the LED functionality with it. Now the Aura lighting turns off more quickly after the system shuts down and also when it goes to sleep.

This settings solved my usse with the red light. Ram model: CMK16GX4M2B3200C16, Bios: 0704
I leaved the CPU Offset to auto instead of +80mV

[Farinasaur]

Now, a different story:

1) Without the VGA, I got the CPU QLED lit. Shut down the PC, booted again, same error.

2) After removing 1 RAM stick, It went to the BIOS. Shut down the PC, inserted the second stick, went to the BIOS and got artifacts on onboard GPU.

3) Removed both RAM sticks, inserted the VGA, got the CPU QLED.

4) Removed the VGA, inserted the RAM back, got the RAM QLED for the first time.

5) Restarted the PC, it's running flawlessly right now.

So, is that the motherboard, RAM, CPU or VGA issue!? lol I need to RMA something, I just don't know what 😞

[Buellersdayoff]

Farinasaur wrote:
Now, a different story:

1) Without the VGA, I got the CPU QLED lit. Shut down the PC, booted again, same error.

2) After removing 1 RAM stick, It went to the BIOS. Shut down the PC, inserted the second stick, went to the BIOS and got artifacts on onboard GPU.

3) Removed both RAM sticks, inserted the VGA, got the CPU QLED.

4) Removed the VGA, inserted the RAM back, got the RAM QLED for the first time.

5) Restarted the PC, it's running flawlessly right now.

So, is that the motherboard, RAM, CPU or VGA issue!? lol I need to RMA something, I just don't know what 😞

If its up and running, see how it goes, run real bench for a while to give a full system load. Maybe just needed to re-seat some components.

[Farinasaur]

Buellersdayoff wrote:
If its up and running, see how it goes, run real bench for a while to give a full system load. Maybe just needed to re-seat some components.

Since still not working with a VGA, something stills wrong.

[kingkajsdhaskas]

Sofar so good! 🙂 But we will see what happens in the next couple of days..

[Buellersdayoff]

There is a section in bios for boot voltages, manually set them to close what you set main voltage, eg dram 1.35, dram boot voltage 1.3/1.35. You can also do the same for cpu/cache, it might help cold boot