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Boot problems with ASRock Z87 Extreme4

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palebluedot89 View Drop Down
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    Posted: 10 Feb 2016 at 10:10am
My computer is at least powering up now. I can't find any memory but I'll keep looking. In the meanwhile I've cleared cmos, reseated the ram and the computer still won't post no matter how long I wait.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 10 Feb 2016 at 4:43am
Check to make sure you replaced the clear CMOS jumper to the correct position. If it is set to the clear position the system will not respond as you described.
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palebluedot89 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote palebluedot89 Quote  Post ReplyReply Direct Link To This Post Posted: 10 Feb 2016 at 4:22am
It was not overclocked at all. I'll try to find some memory to test and report back.

Actually, I tried to clear cmos by unplugging the computer, unplugging the video card and USB connections/fan power cables and removing the cmos battery/setting the clrcmos1 jumpers. I tried to put everything back and turn the computer back on but now nothing is happening at all when I press the power button. Hopefully I didn't break anything :(

I'm at work at the moment I'll report back when I get back home.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote wardog Quote  Post ReplyReply Direct Link To This Post Posted: 10 Feb 2016 at 4:05am
Originally posted by palebluedot89 palebluedot89 wrote:

Unfortunately I can't get the computer to start up.


Curious. is, or was, it overclocked?

Borrow some memory from a friend to test.
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palebluedot89 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote palebluedot89 Quote  Post ReplyReply Direct Link To This Post Posted: 09 Feb 2016 at 10:58pm
Unfortunately I can't get the computer to start up. If I do I'll post voltage and temp screenshots. It has been taking longer and longer to boot, and now just won't boot up at all. Oddly, when it does boot up everything seems to run just fine. I can't stress enough how identical my problem is to the op (except for a brief flash of 36 on the dr. Debug).

My power supply is a corsair ax760 and I bought it new in early 2014 along with all of my other parts.

So far I've tried cleaning the inside of the case and clearing cmos.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote wardog Quote  Post ReplyReply Direct Link To This Post Posted: 09 Feb 2016 at 10:00am
Those errors, 4f 15 36, are all relating to memory issues.

Grab HWiNFO64 and post screenies of all your voltages, not just memory. Seeing all the temps would be a bonus too. Use Windows own Snipping Tool to grab the pertinent. If you don't know a file hoster, imgsafe.org is free, fast, and best of all req's no registration.

What make and model is the PSU, and what is its age?

Is the computer clean and all parts inside free of dust/dirt?



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palebluedot89 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote palebluedot89 Quote  Post ReplyReply Direct Link To This Post Posted: 09 Feb 2016 at 8:52am
Yes the same board. Error code is 4f and then switches to 15, and then 36 then back to 4f.

Sometimes the computer will boot up after a while. But increasingly it won't start at all. I've got an evga gtx 780, i7 4770 cpu, and 2 gskill sniper 8gb memory.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote parsec Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jan 2016 at 10:52am
Originally posted by palebluedot89 palebluedot89 wrote:

Any progress solving this problem? I'm having pretty much exactly the same issue except that it isn't booting up anymore.


Same board as the OP? A one line post like that tells doesn't tell us much at all besides you have a problem.
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palebluedot89 View Drop Down
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Post Options Post Options   Thanks (0) Thanks(0)   Quote palebluedot89 Quote  Post ReplyReply Direct Link To This Post Posted: 04 Jan 2016 at 9:34am
Any progress solving this problem? I'm having pretty much exactly the same issue except that it isn't booting up anymore.
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Post Options Post Options   Thanks (0) Thanks(0)   Quote Xaltar Quote  Post ReplyReply Direct Link To This Post Posted: 13 Sep 2015 at 11:08pm
I would try a full CMOS clear as described here

Both codes 4f and 15 are pertaining to CPU or Memory faults. Have you tried reseating the CPU?
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