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!

[Malkan]

I really thought my issue was resolved with relaxed memory timings, sa/io voltages. Ran 40 hrs in total of memory testing and a lot of cold boots. But today the issue appeared once again with the CPU LED going Red and im unable to boot. I reset bios and disabeled XMP, still got cold boot error!!


Asus please, this is a issue with your motherboards and hopefully it can be resolved with a bios update!

There is a 35 page forum thread on Corsairs forums about this issue on both Z170/270 ASUS motherboards, the issue is clear as day that the issue is with Asus boards and not faulty memory modules. All the modules are in the QVL. Are we better off buying different brand motherboards in order to get our systems to work???

[kingkajsdhaskas]

Malkan wrote:
I really thought my issue was resolved with relaxed memory timings, sa/io voltages. Ran 40 hrs in total of memory testing and a lot of cold boots. But today the issue appeared once again with the CPU LED going Red and im unable to boot. I reset bios and disabeled XMP, still got cold boot error!!


Asus please, this is a issue with your motherboards and hopefully it can be resolved with a bios update!

There is a 35 page forum thread on Corsairs forums about this issue on both Z170/270 ASUS motherboards, the issue is clear as day that the issue is with Asus boards and not faulty memory modules. All the modules are in the QVL. Are we better off buying different brand motherboards in order to get our systems to work???

😞

yeupppp its pretty sucky!!

As far as i can tell it isnt a new "feature" this bug has been around before on previous Asus motherboards! Luckily i haven't seen any reports yet that the bug never was fixed so im hoping that a bios update will come soon and fix this and possibly (i know im dreaming) 7700k temps being so high/jumpy 🙂

[Buellersdayoff]

Possibly try the gpu in another system to rule it out

[Buellersdayoff]

Can you get it going with 1 stick of ram + vga

[Farinasaur]

Buellersdayoff wrote:
Can you get it going with 1 stick of ram + vga

No.

1) Only without VGA

2) Most of the time with 2 RAM sticks

3) Sometimes only with 1 RAM stick

4) And rarely, no matter what, CPU QLED is lit and the system does not POST.

I can't assume the issue is on the CPU since when I'm on scenario 1, 2 and 3 I can do some benchmarks and play some games normally.

[Buellersdayoff]

Without having other components to swap, maybe a local pc shop could help with that, I'd be looking to return or rma the motherboard first. If you could test the gpu in another system it would help

[Farinasaur]

Buellersdayoff wrote:
Without having other components to swap, maybe a local pc shop could help with that, I'd be looking to return or rma the motherboard first. If you could test the gpu in another system it would help

I'll test GPU and RAM on a friend PC tonight. When I arrive home, a new GPU (GT420) which I bought for test purposes will be there.

I hope it's the motherboard...

[Farinasaur]

Buellersdayoff wrote:
Without having other components to swap, maybe a local pc shop could help with that, I'd be looking to return or rma the motherboard first. If you could test the gpu in another system it would help

So I did the test on my friend's PC.

Tested the VGA and RAM into his Maximus VIII Hero and i7 6700k, everything worked perfectly.

Wasn't able to test the CPU because he uses watercooler with acrylic tubing and would be selfish from me to destroy his loop / coolant.

What do you guys think, motherboard issue or CPU?!

[Buellersdayoff]

Cpu failure seems less common around the web but not out of the question, since you'll be taking the system apart re-seating the cpu and inspecting the socket for bent pins would be worth a shot. Also test the system out of the case...good news about the gpu at least ☺️

[Farinasaur]

Buellersdayoff wrote:
Cpu failure seems less common around the web but not out of the question, since you'll be taking the system apart re-seating the cpu and inspecting the socket for bent pins would be worth a shot. Also test the system out of the case...good news about the gpu at least ☺️

The system is already out of the case, over my bench.

After the VGA and RAM tests on my friends PC, I tried to turn it on again at home. Failed, if I connect the VGA I receive the CPU QLED error.

Right now I'm typing using the system without the VGA. There's no bent pins on the CPU.

I want to be sure the problem is on the MOBO so I won't waste my time waiting for the RMA 😞

Is there any incompatibility between the hardware I'm using? lol 😞