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Taichi X470 seems to be in a boot loop

Printed From: ASRock.com
Category: Technical Support
Forum Name: AMD Motherboards
Forum Description: Question about ASRock AMD motherboards
URL: http://forum.asrock.com/forum_posts.asp?TID=12422
Printed Date: 27 Jul 2021 at 4:11pm
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com


Topic: Taichi X470 seems to be in a boot loop
Posted By: sanklamm
Subject: Taichi X470 seems to be in a boot loop
Date Posted: 12 Sep 2019 at 4:24am
Hello,

I am in the process of building a new PC. Components are as follows:
  • ASRock Taichi X470
  • Ryzen 2700x
  • Ripjaw V 2x8 GB RAM
  • Radeon RX 580


After connecting every component to the motherboard I booted up the PC loaded a Manjaro live CD and started a new installation to a SATA HDD.
During the installation the monitor turned off and nothing happened anymore. LEDs still pulsing, fans still running.

Restarting the PC gave the same (non-)picture. I am getting no boot screen, no BIOS logo, nothing. The monitor stays off. There is no signal.

The computer is "on" (LEDs pulsing, all fans spinning) and I get POST codes from the Taichi. But nothing else happens.

The POST codes I see (not in that order and I'm sure I've missed a few)
07, 14, 15, 3B, 3E, 54, 60, 63, 7A, 90, C0
The codes are always looping.
Can someone deduce what is wrong?

Here is a list of what I've already tried. Everything without a change:
  • reseated RAM
  • tried both single RAM modules in every slot
  • reseated CPU
  • viaually checked for bent pins on CPU
  • tried a single 4GB DDR4 RAM module I've bought additionally for troubleshooting
  • tried graphics card successfully on an older Intel-based motherboard
  • tried the power supply successful with the older Intel-based board
  • tried without graphics card
  • tried without any drives
  • sending back the motherboard and getting a new one
  • trying it (since the arrival of the new board) outside the case. Just on the carton the board came in
  • several CMOS resets


The motherboard case says that the board is ready for the Ryzen 3000 series. So it should be ok for a 2700x, right?

I don't know what to do anymore. The only thing left it could be (in my mind) is a broken CPU or a BIOS not suitable for my system.

What can I try? What could it be?



Replies:
Posted By: cx5
Date Posted: 12 Sep 2019 at 3:59pm
hello @sanklamm

Set ram speed 2133mhz to install windows, if all OK, means ram parameters need manual adjustment, may be cannot use XMP.

May be!!!

-------------
X370Taichi 4x8GB HOF4CXLBS3600K17LD162C CX750M Optane900P TT_V71
3800x PoseidonAbsoluteZero4 BarrowPWM-17w pump4200rpm>bykski420x140x28
HISvega64 BS-AMRVEGA-PA FancierPWM-10w pump2700rpm>420x140x86


Posted By: sanklamm
Date Posted: 12 Sep 2019 at 4:04pm
hello,

the problem is, how can I set the RAM speed if I'm not even able to get into the BIOS? As I said, the monitor doesn't get a signal.


Posted By: Termy
Date Posted: 12 Sep 2019 at 5:48pm
then you'll have to reset cmos i'm afraid.


Posted By: sanklamm
Date Posted: 12 Sep 2019 at 6:15pm
Is there a special way to reset CMOS apart from disconnecting PSU, removing battery, draining system of left over current by holding the power button for 20 seconds and setting the CMOS reset jumper for half an hour?

I did that a couple of times.


Posted By: Termy
Date Posted: 12 Sep 2019 at 6:38pm
on the x470 taichi, there is a clear cmos button in the I/O-Block. Disconnect PSU, press the button for >5s and you are set.


Posted By: sanklamm
Date Posted: 12 Sep 2019 at 6:48pm
yeah. that too. Did this the first 20 times. Then resorted to the aforementioned measure.

I have a feeling that I have a bad CPU. But how can I test for that?


Posted By: Boggsy
Date Posted: 12 Sep 2019 at 7:17pm
Did you by any chance forget to connect the ATX12V power supply?


Posted By: sanklamm
Date Posted: 12 Sep 2019 at 7:21pm
I plugged in the big 24? pin connector, the 8 pin and 4 pin connector by the CPU. Also the graphics card has its cable plugged.

The PSU is a Corsair 750W.


Posted By: Xaltar
Date Posted: 12 Sep 2019 at 7:22pm
Make sure the RAM is properly seated, sometimes the slots can be very tight on a new board.
Use a single module of RAM in slot A2.
Check the sticker on the BIOS chip to see what BIOS version is installed
Try turning on the PC and just leaving it for an hour.
If all else fails, return the CPU for replacement.
With Post codes the only one that matters is the last one on the display before it boot loops. In this case I am guessing C0 which is AGESA Boot Load initialization.


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Posted By: sanklamm
Date Posted: 12 Sep 2019 at 7:24pm
I also used this PSU to power the old Intel mobo on which I've tested the graphics card. Only the 8 pin connector had no place to put it in. So that cable is not tested. But the PSU is brand new.


Posted By: sanklamm
Date Posted: 12 Sep 2019 at 7:37pm
Originally posted by Xaltar Xaltar wrote:

Make sure the RAM is properly seated, sometimes the slots can be very tight on a new board.
Use a single module of RAM in slot A2.
Check the sticker on the BIOS chip to see what BIOS version is installed
Try turning on the PC and just leaving it for an hour.
If all else fails, return the CPU for replacement.
With Post codes the only one that matters is the last one on the display before it boot loops. In this case I am guessing C0 which is AGESA Boot Load initialization.


Thanks for the suggestions.
I am pretty sure the RAM was properly seated. It gave clicks on both sides of the slot.
I've tried about every permutation of RAM in those slots.

The sticker says 1.30 but is striked through by a black marker. Maybe because it was upgraded to support Ryzen 3000 series. There was an additional sticker on the mobo box saying "Ryzen 3000 ready". I guess for that a flashed BIOS was necessary. So I'm not sure which BIOS is installed.

Yesterday I've tried leaving it running with the new 4GB Ram module (I've bought for troubleshooting) for about 30-45 minutes.

A couple of hours ago I've brought mobo, CPU, graphics card and RAM to a shop nearby to check for damaged parts because I didn't know what to do anymore.
And since I've already RMAed the mobo - which seems to not have been the problem - I would like to know what is actually broken before RMAing anything else.

We'll see what they find. This PC building project turned out to be a terrible experience.


Posted By: Xaltar
Date Posted: 12 Sep 2019 at 11:01pm
Good call taking it in to be checked out for you. Let us know what they find

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Posted By: sanklamm
Date Posted: 12 Sep 2019 at 11:14pm
I just got the call. The CPU is fried. With another 2700x the system boots right up.

The technician also told me that the POST code cycling is due to not finding a (for the boot process) vital component. So the board looks for that device, does not find it and starts all over.

Now I hope that I get the CPU RMAed. Whish me luck :)

And thanks for all the tips.


Posted By: Xaltar
Date Posted: 12 Sep 2019 at 11:29pm
I suspected as much, good luck with the RMA

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