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ASRockH170M-ITX/ac won't POST
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permelquedon View Drop Down
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    Posted: 12 Jan 2016 at 4:57am
Hello,

I have been banging my head trying to figure this one out.  Here is the configuration I am trying to get to work:

Motherboard: ASRock HM170M-ITX/ac
CPU: Intel Pentium G4400 3.3 GHz (w/ stock Intel CPU cooler)
RAM: Crucial 8GB (2 x 4GB) CT2K4G4DFS8213
PSU: CORSAIR RM Series RM450 450W

When I turn the power on, I hear a very faint click from the PSU, and then nothing happens. I tested the PSU separately (the "paperclip" test) and it is working.

I have verified the power switch is connected to the correct headers.  No other components (hard drives, usb, etc) are connected at this time.

Any suggestions? I am at a loss as to what to try next.
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permelquedon View Drop Down
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I should also note that I have already tried swapping out the RAM, so this system is failing to POST with 2 sets of RAM and a known good power supply.
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Xaltar View Drop Down
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Points: 25813 		Post Options Post Options   Thanks (0) Thanks(0)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2016 at 5:43am
What version number is printed on the sticker on your BIOS chip? That board requires BIOS version 1.30 to support the G4400.

Even then I am pretty sure the system should still power on even if it will not post. Is the 4 pin CPU power connector attached to the board? Also check and see if the clear CMOS jumper is set to clear, if it is restore it to it's correct position. 

Good luck
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permelquedon View Drop Down
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Thanks for the quick reply.  It turns out I do have v1.10 of the BIOS so my CPU isn't supported.  Is there a reasonable way to update the BIOS?

And to your other questions, yes I do have the 4 pin power cable connected and the CMOS pin is in the default position.
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wardog View Drop Down
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Originally posted by permelquedon permelquedon wrote:

It turns out I do have v1.10 of the BIOS so my CPU isn't supported.  Is there a reasonable way to update the BIOS?


ASRock themselves sell BIOS chips for $15.00USD+shipping, but if you ask politely explaining your situation they've been known to send them for only shipping. Location dependent.
http://www.asrock.com/support/index.asp?cat=RMA

There's BIOS Depot on eBay. Also trustworthy, fast to ship, and reliable. I've used them many times.
http://www.ebay.com/sch/biosdepot/m.html?item=381143067366

Leaving the least cost-worthy alternative. Buy a CPU that is supported by your current BIOS, install it, upflash, and then re-install that G4400.


Them's all I know of in your predicament.



edited: add "explaining your situation"

Edited by wardog - 12 Jan 2016 at 7:50am
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wardog View Drop Down
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Points: 6447 		Post Options Post Options   Thanks (0) Thanks(0)   Quote wardog Quote  Post ReplyReply Direct Link To This Post Posted: 12 Jan 2016 at 7:52am
Note: I you choose to use BIOS Depot on eBay and don't see your board/BIOS listed send them a message thru eBay and they usually respond within 12hrs, most times way less.
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permelquedon View Drop Down
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Thanks for the tips!  I've reached out to both ASRock support as well as the Ebay vendor you mentioned.
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permelquedon View Drop Down
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Fast forward - I was able to obtain a new BIOS thanks to ASRock's (extremely) helpful support.

I installed the new BIOS and unfortunately I am back to square one.  With the components I listed above and a 1.4 BIOS, when I hit the power button on my chassis, I hear a faint "click" from the PSU but it still will not power on.

At this point I am extremely confused about what the issue is.  This is now my second motherboard (I RMA'd the original thinking I had a DOA).  I have tested with 2 different types of RAM, one of which is specifically listed by both ASRock and Crucial as being supported.  The PSU passes a "paper clip" test.  At this point either there is some bizarre interaction with the PSU/motherboard or my CPU itself is dead, which doesn't past my gut test.

Does anyone have any suggestions for how I can troubleshoot this?  I'm at my wit's end!

Thanks!
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granite View Drop Down
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I'm having a similar problem (different board) although it didn't start out that way - system ran fine until the other day when it stopped powering on.

In any case, have you checked whether your case's power button might be bad? You can try swapping the header with the reset button instead and see if the reset button works for you in powering on the system. You can also try shorting the power pins to "jump" the machine - search powering on motherboard without a case on youtube if you're not familiar with the process. 

These steps didn't help resolve my issue personally, I'm leaning towards thinking my mobo died.
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wardog View Drop Down
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Points: 6447 		Post Options Post Options   Thanks (0) Thanks(0)   Quote wardog Quote  Post ReplyReply Direct Link To This Post Posted: 24 Jan 2016 at 8:36am
Originally posted by permelquedon permelquedon wrote:

The PSU passes a "paper clip" test.


Seems everyone lately is doing the paper clip test.



re: paper clip test, and looking at the other parts IMO you've ruled out in diagnosing this

Keep in mind the paper clip test does not put a load against the PSU. It simply, SIMPLY, is a voltage ok test. Yet no real loading against the PSUs internals.


Consider what all you've looked at and performed. Where does your PSU fall into what you've already done?

Exactly! That's what I read here too.

Borrow a proper sized PSU and check the last piece you haven't yet.
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