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 turned XMP off, manually changed to 3000 mhz, set Dram volt to 1.35v and SA/IO Both at 1.25, 16-18 timings. 9 hrs stress test passed so far, will keep it running for another 12hrs to make sure. Hopefully cold start works now too..

[kingkajsdhaskas]

i spoke to soon, this morning it didnt want to play anymore.. Ill have to try more settings.. *sigh*

[Malkan]

kingkajsdhaskasda wrote:
i spoke to soon, this morning it didnt want to play anymore.. Ill have to try more settings.. *sigh*

I think mine is fixed, seems to work fine now. Been running Aida64 System memory test (with CPU/FPU/Cache) for 19 hours + 10x Cold starts without problem.

Disable xmp, set to manual + DDR4 3000Mhz, 16-18 timings, 1.25v SA and IO, 1.35v DRAM. Hope it works for you aswell!

[kingkajsdhaskas]

Malkan wrote:
I think mine is fixed, seems to work fine now. Been running Aida64 System memory test (with CPU/FPU/Cache) for 19 hours + 10x Cold starts without problem.

Disable xmp, set to manual + DDR4 3000Mhz, 16-18 timings, 1.25v SA and IO, 1.35v DRAM. Hope it works for you aswell!

Nice to hear! Lets hope this sticks and stays fixed, and for me! 🙂

A noob question; what exactly do you mean by 16-18 timings, the CAS latency? To try anything inside that range?

[Malkan]

kingkajsdhaskasda wrote:
Nice to hear! Lets hope this sticks and stays fixed, and for me! 🙂

A noob question; what exactly do you mean by 16-18 timings, the CAS latency? To try anything inside that range?

16 on the first row in the Dram-timing section in bios and 18 on the 2nd row

[kingkajsdhaskas]

Malkan wrote:
16 on the first row in the Dram-timing section in bios and 18 on the 2nd row

Ah, thanks! Ive tried coldstarting twice and sofar so good! Gonna run some stress tests and see where i end up! :cool:

[Malkan]

kingkajsdhaskasda wrote:
Ah, thanks! Ive tried coldstarting twice and sofar so good! Gonna run some stress tests and see where i end up! :cool:

Perfect! Been running another 20hrs of HCI-Memtest, perfect stable for me. I even lowered the SA Voltage to 1.20 🙂

[kingkajsdhaskas]

Malkan wrote:
Perfect! Been running another 20hrs of HCI-Memtest, perfect stable for me. I even lowered the SA Voltage to 1.20 🙂

Seems perfect for me too now, thanks to your settings! Just ran Aida for 5 hours no hickups! I did have to tweak them a little bit cause i got a random coldstart error but now all is well (knock on wood!!) 🙂

my current settings: dram voltage 1.3596v / both io and sa voltages at 1.23750v timings 16/18.

Thanks again!

[kingkajsdhaskas]

Am i imagining things or can "eco" mode on my evga psu have an effect on the coldstart errors? I thought all it did was like a silent option for its fan, but seems to me that it can have an impact on coldstarting and possibly other things?

[Malkan]

kingkajsdhaskasda wrote:
Am i imagining things or can "eco" mode on my evga psu have an effect on the coldstart errors? I thought all it did was like a silent option for its fan, but seems to me that it can have an impact on coldstarting and possibly other things?

I highly doubt it since we both have different PSU's but had identical issues. Have others with the evga psu reported issues?