h270m-itx/ac

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   thanks wardog. I ended up having 9 motherboards (out of 50) that would fail to reboot. This effectively ruled out hardware issues because no company could possibly have such an abysmal failure rate without a recall. 
Our shipment was a mix of 1.10 and 1.20 BIOS. 1.20, oddly enough, was the version that would hang on restart. 

Updating BIOS to 2.00 fixed the restart problem.

hopefully that helps anyone else with that experience.

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bamalucky Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 04 Jun 2017 Location: new york Status: Offline Points: 3	Post Options Post Reply Quote bamalucky Report Post Thanks(1) Quote Reply Topic: h270m-itx/ac Posted: 01 Jul 2017 at 6:37am
	thanks wardog. I ended up having 9 motherboards (out of 50) that would fail to reboot. This effectively ruled out hardware issues because no company could possibly have such an abysmal failure rate without a recall. Our shipment was a mix of 1.10 and 1.20 BIOS. 1.20, oddly enough, was the version that would hang on restart. Updating BIOS to 2.00 fixed the restart problem. hopefully that helps anyone else with that experience.

wardog Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 15 Jul 2015 Status: Offline Points: 6447	Post Options Post Reply Quote wardog Report Post Thanks(0) Quote Reply Posted: 04 Jun 2017 at 11:42am
	Kid and Bama, If you make it to the Windows "loading' screen IMHO that implies POST has finished, leading me to believe this could be maybe a one off flaky install Are your BIOSes up to date? The latest is 2.00. Bama, where these parts bought at the same time? Swapping out the mem in those two would be what I'd be doing too. If swapping corrects this, fire up the offending sticks and using Thaiphoon Burner look to see that the offending sticks are the same IC's.

bamalucky Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 04 Jun 2017 Location: new york Status: Offline Points: 3	Post Options Post Reply Quote bamalucky Report Post Thanks(0) Quote Reply Posted: 04 Jun 2017 at 7:55am
	I have the same issue - but I think the problem is with the motherboard. I recently purchased 40 of these motherboards, building identical units. Ram = corsair 16gb, i5 kaby lake. out of 20 builds, i have two units that will not software reboot. They will software shutdown - but will not restart. i have tried unplugging the reset switches on these two problematic units. Other units are identical (all machines are clones) and the others reboot properly. my next step is to swap out RAM on the problematic units / then swap out the CPUs. However, I strongly suspect that the problem is with the motherboard.

Kid007 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 07 May 2017 Location: Hungary Status: Offline Points: 7	Post Options Post Reply Quote Kid007 Report Post Thanks(0) Quote Reply Posted: 07 May 2017 at 8:07pm
	My ram is not listed on QVL... http://asrock.com/mb/Intel/H270M-ITXac/index.asp?cat=Memory#Memory

Kid007 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 07 May 2017 Location: Hungary Status: Offline Points: 7	Post Options Post Reply Quote Kid007 Report Post Thanks(0) Quote Reply Posted: 07 May 2017 at 7:43pm
	...By the way i have tried with 8gb stick with the same result.. on usb 2.0 port with no usb 3.0 ports used at all.

Kid007 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 07 May 2017 Location: Hungary Status: Offline Points: 7	Post Options Post Reply Quote Kid007 Report Post Thanks(0) Quote Reply Posted: 07 May 2017 at 7:36pm
	Memory type: kingston hyperx fury HX421C14FB/16

Kid007 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 07 May 2017 Location: Hungary Status: Offline Points: 7	Post Options Post Reply Quote Kid007 Report Post Thanks(0) Quote Reply Posted: 07 May 2017 at 7:31pm
	Yes, IM using a snlge 16gb stick. Tried to enable XD but cant find... Dont have other ram at home ?��

Xaltar Members Profile Send Private Message Find Members Posts Add to Buddy List Moderator Group Joined: 16 May 2015 Location: Europe Status: Offline Points: 27443	Post Options Post Reply Quote Xaltar Report Post Thanks(0) Quote Reply Posted: 07 May 2017 at 6:52pm
	Could be RAM incompatibility. Am I correct in assuming that you are using a single 16gb stick? I would try some different RAM to test.


Kid007 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 07 May 2017 Location: Hungary Status: Offline Points: 7	Post Options Post Reply Quote Kid007 Report Post Thanks(0) Quote Reply Posted: 07 May 2017 at 6:29pm
	....also tried every variations with secure boot (enable/disable) with csm (enable disable, legacy only, uefi only)... And cant find supported parts list for MOBO

Kid007 Members Profile Send Private Message Find Members Posts Add to Buddy List Newbie Joined: 07 May 2017 Location: Hungary Status: Offline Points: 7	Post Options Post Reply Quote Kid007 Report Post Thanks(0) Quote Reply Posted: 07 May 2017 at 5:53pm
	Actually most of the Time when the Windows logo appears, the machine retarts... Tried to disconnect SSD (no hard drive) and tried with hdd. Pendrive is in usb 2.0 port.. when try with dvd the boot fail át the same point...tired cmos reset, update uefi via internet. Tried to move the ram to the other slot... There is an installed win10 ön the SSD, tried to boot IT, but IT dies át the same point - the only difference is te "try to repair.." string under the Windows logo... Can somebody help me?