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J3455M powering on-off-on before booting
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demetris View Drop Down
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Points: 10 		Post Options Post Options   Thanks (0) Thanks(0)   Quote demetris Quote  Post ReplyReply Direct Link To This Post Posted: 16 Dec 2016 at 2:29am
Originally posted by wardog wardog wrote:

Look closely at the case wiring to mobo System Panel header that the wiring is correct.

They are correct.
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nocny View Drop Down
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I have the same issue with J3455-itx (P1.10), my psu is 480W Tagan model: TG480-U01. I think that this is a bios/uefi issue.
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Aristoc View Drop Down
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Originally posted by demetris demetris wrote:

I have the J3455M motherboard and when I press the power button to turn the PC on, the board will power on, then off (and sometimes off and on again) before finally booting. This happens when:
1. I power it on after the power has been completely cut off from the psu
2. I make a change in the BIOS and save
3. I force the PC to shutdown by holding the power button

This wouldn't have been much of an issue if the hard disks did not power on and off as well. But I'm sure that this powering on and off is not good for them because the power goes off right after they start spinning.

Does anyone else have the same problem with J3455M? I have noticed another post about a different motherboard but not this one. Is this normal or is my motherboard defective?

I have already sent two emails to Asrock tech support and I'm still waiting for a reply.

Originally posted by nocny nocny wrote:

I have the same issue with J3455-itx (P1.10), my psu is 480W Tagan model: TG480-U01. I think that this is a bios/uefi issue. 


I could be way off target but this wouldn't be something to do with the deep sleep mode setting in BIOS ? For me changing to S4-S5 solved it. (I have a different MOBO). 


Edited by Aristoc - 17 Dec 2016 at 12:21am
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demetris View Drop Down
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Originally posted by Aristoc Aristoc wrote:

Originally posted by nocny nocny wrote:

I have the same issue with J3455-itx (P1.10), my psu is 480W Tagan model: TG480-U01. I think that this is a bios/uefi issue. 
I could be way off target but this wouldn't be something to do with the deep sleep mode setting in BIOS ? For me changing to S4-S5 solved it. (I have a different MOBO). 

@nocny Yes it may be a BIOS issue that could be fixed with an update but unfortunately mine has now gone to the next level where it refuses to POST etc even with the EVGA PSU which should be more than capable (not being too old) to power it. Not to mention that it would be okay if hard disks where going through the power cycle only on cold boot, but definitely not for normal boot.

@Aristoc I have tried any setting I could find in the BIOS regarding deep sleep modes and other CPU power settings but it didn't fix my problem. After searching a bit online I found similar issues with an older Intel platform and is really weird that this problem still exists with Apollo Lake (as it seems).
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Points: 3 		Post Options Post Options   Thanks (0) Thanks(0)   Quote nocny Quote  Post ReplyReply Direct Link To This Post Posted: 23 Dec 2016 at 12:50am
In my case (I have j3455-itx) proper clearing of the cmos and enable of csm (all 3 settings for uefi) Solved the problem, now it powers off and on only after saving bios.
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