Suddenly not booting with all cores enabled
Printed From: ASRock.com
Category: Technical Support
Forum Name: Intel Motherboards
Forum Description: Question about ASRock Intel Motherboards
URL: https://forum.asrock.com/forum_posts.asp?TID=4202
Printed Date: 19 Jul 2025 at 5:02am
Software Version: Web Wiz Forums 12.04 - http://www.webwizforums.com
Topic: Suddenly not booting with all cores enabled
Posted By: wildfireheart
Subject: Suddenly not booting with all cores enabled
Date Posted: 09 Jan 2017 at 6:52pm
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My setup was working flawlessly for a week and one day few minutes after boot Windows suddenly froze for no obvious reason and after hard reset no system boots with more then 3 cores enabled, and even with 3 sometimes doesn't boot. CPU temperatures are never higher than 30-40°C. I checked everything inside case, everything seems correctly installed. Intel Processor Diagnostic Tool passes with no errors (also with 3 cores enabled). I tried memory in different slot, didn't help. Nothing is and never was overclocked (as far as I know, I use default UEFI settings), voltages are on standard levels. I have latest UEFI. I'm using following components: Intel i5-6600K ASRock Z170 EXTREME4 HyperX DDR4 8GB 2133MHz Cl14 Fury Black [HX421C14FB/8] (single stick) Zalman ZM600-GSII 600W CoolerMaster Hyper TX3 EVO I use integrated HD 530 GPU. If it is of any help, I have dualboot with Windows 10 and Opensuse Tumbleweed. POST is fine, GRUB works fine, with all cores enabled Windows hangs at blue logo (with no circling dots) and GNU/Linux after which looks like NMI watchdog initialisation, the last line trace looks like "[0.559] #0 #1 #2[", which I imagine could probably indicate, that something is wrong with core #4, or when system tries to initialise / use last core. I did IPDT for UEFI, since I cannot boot into any system with all 4 cores enabled. The only thing out of order seems to be this, it's same with 3 and 4 cores enabled: --- Reading CPU Frequency --- Expected CPU Frequency is --> 3.50GHz Detecting CPU Frequency ... Detected CPU Frequency --> 4.6665 CPU Frequency Test Passed with Warning!!! The processor frequency could be affected by power management features. In order to ensure the processor frequency is not affected by a power management setting, enter BIOS, load defaults, and disable any 'Over-Clocking' or power management features that may affect processor frequency. Also, set any software applications which control power management features to default. When I run test on Windows with 3 cores enabled, detected CPU frequency is 3.4996 GHz and clock frequency is 99.9912 MHz.
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Replies:
Posted By: wardog
Date Posted: 09 Jan 2017 at 7:37pm
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" rel="nofollow - 233x20 will get 4.665Ghz What was the normal OC she ran on? |
Posted By: wildfireheart
Date Posted: 09 Jan 2017 at 7:51pm
| I have everything set to "Auto", I never intentionally overclocked anything so far. When I run tests in Windows (with 3 cores), the frequency is 3.5 GHz as expected. When I run same test with 3 or 4 cores in UEFI version of IPDT, I get 4.665 GHz, so I think this could be just wrong reading. |
Posted By: wardog
Date Posted: 09 Jan 2017 at 11:10pm
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" rel="nofollow - On the intro page of entering the BIOS, at the top, what BIOS rev is the board flashed to? 3.40? How ling ago was it the system was built? 1 week? What slot do you have the lone stick of memory residing in? |
Posted By: wildfireheart
Date Posted: 09 Jan 2017 at 11:20pm
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If you mean UEFI version, then it's P7.00, I did automatic network update when problem started, didn't help. Yes, setup was working fine for about a week, no high temperatures, everything normal and stable. After that, two days ago, I started the computer after it was turned off for a night, booted into Win 10, started "Adware Removal Tool by TSA", it run up to 10%, then froze, I did hard reset and it won't boot with all cores since. I checked the system with 3 cores after that - no adware or viruses found. When it broken down, RAM was in B1 (I was too lazy to reattach fan to the other side of the cooler), currently it's in A2, but I tried all other slots. XMP profile didn't help either. Memtest found no errors, so I assume memory is fine.
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Posted By: wardog
Date Posted: 09 Jan 2017 at 11:30pm
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" rel="nofollow - Hmmmm.... One more please. Run the Command resmon, get over to theCPU tab, how many cores are graphed/shown at the right? |
Posted By: wildfireheart
Date Posted: 10 Jan 2017 at 12:31am
| 3, because I have 3 enabled in UEFI (I have graphs for CPU - Total, Service CPU Usage, CPU 0, CPU 1 and CPU 2). |
Posted By: wardog
Date Posted: 10 Jan 2017 at 3:10am
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" rel="nofollow - Hmmmm In the main page of the BIOS what does it say the processors Ghz is? Too look in the CPU Config page and note the numbers there too. Odd. Has over tightening the TX3 crossed your mind? Sorry, for I have no way of knowing your knowledge and experience here over the net in as many printed words is present. |
Posted By: wardog
Date Posted: 10 Jan 2017 at 3:12am
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" rel="nofollow - DO NOT TOUCH, yet run the backs of your fingers over the VRM section. Hot by chance? Scalding hot? |
Posted By: Xaltar
Date Posted: 10 Jan 2017 at 3:33am
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I would pull the CPU and check for warping and bent or burned pins. ------------- 
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Posted By: wildfireheart
Date Posted: 10 Jan 2017 at 4:19pm
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" rel="nofollow - Here is a gallery of photos of CPU and temperatures of some components of VRM in Celsius (if I'm not measuring the right thing, please let me know): https://drive.google.com/open%3Fid=0BynchtWoOt7acVBMMTdXNnh0SzA" rel="nofollow - https://drive.google.com/open%3Fid=0BynchtWoOt7acVBMMTdXNnh0SzA CPU substrate is not bent (after I read some post, I was afraid it could be, but luckily it's not), nor there are any visible burnt or bent pins, or at least I don't see any yet. When I reinstalled everything, it's still the same, it only boots with max 3 cores enabled in BIOS. |
Posted By: wildfireheart
Date Posted: 10 Jan 2017 at 4:34pm
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" rel="nofollow - As to my skills, I have masters degree in electrotechnics and my job is to program (and sometimes help design) embedded systems, but I'm mainly programmer and this is my first build in years, so I do not know how exactly some things on motherboard / in CPU work or what the "normal" state of components / values should be. On the main page it says 3500 MHz. CPU Config page:
As to the cooler, I think I'm not over tightening it - it doesn't have normal screws, only some plastic holders and I'm trying to fixate it there as gently as I can. |