Custom build spits Machine_check_exceptions and Clock_watchdog_timeout

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  1. Posts : 9
    Windows 10 Pro

    Custom build spits Machine_check_exceptions and Clock_watchdog_timeout

    Two weeks ago I build a pc and from the start I've been trying to diognose what's wrong with it. It crashes at seemingly random times while running nothing special at all (steam, chrome, spotify, bittorrent). Most of them are Machine_Check_Exceptions, but sometimes it's also Clock_watchdog_timeouts.
    At first I thought it was a driver problem. So, I used Driver Booster to download new drivers. That did not solve the problem and actually made the system very unstable. After that I did a format and just waited until windows started installing the drivers. This worked fine at first, but the same problems came back after a few days. I've updated the bios to the latest version and never done a OC on the machine. A few things that came to my attention while researching, but don't seem likely to be the problem are:

    • When putting the thing together I bend one of the USB3.0 port pins. I have bend the pin back and inserted the cable into the port. The ports in question work well and send over data at speeds I would expect.
    • The CPU cooler I've chosen is very heavy and could be installed improparely. This was one of the things I've found on wikipedia when researching this. However, the CPU runs idle around 35-40C ( 95-104F). I don't know what the temps are when the system crashes, though.
    • I have run memtest86+ for 9h and it gave 0 errors

    While writing this post (~30min), the system has had two Clock_watchdog_timeouts while being idle. Sometimes, the BDOS data collection gets stuck around the 60% mark.Attachment 61512
    Last edited by Phycs; 30 Jan 2016 at 04:53. Reason: grammer
      My Computer

  2. Posts : 14,897
    Windows 10 Pro

    Do you use the USB with the bent pins?

    The 0x9C is similar to 0x124 which is a hardware error.


    Read carefully before proceeding.

    warning   Warning
    If you're overclocking your system, revert back to stock clocks now.

    Note   Note
    Test the system once the overclock is removed before continuing with the steps outlined below.

    Part One: CPU Stress Test
    Part Two: MemTest86+ RAM Diagnostic
    Part Three: Hard Drive Diagnostics
    Part Four: GPU Stress Test



    Run Prime95 and/or IntelBurenTest to stress test your CPU. Prime95 - Stress Test Your CPU - Windows 10 Forums & CPU - Stress Test Using IntelBurnTest - Windows 7 Help Forums

    warning   Warning
    Your CPU temperatures will rise quickly while under this stress test. Keep a keen eye on them and abort the test if overheating occurs.



    Run MemTest86+ to analyse your RAM. MemTest86+ - Test RAM - Windows 10 Forums

    Note   Note

    MemTest86+ needs to be run for at least 8 passes for conclusive results. Set it running before you go to bed and leave it overnight. We're looking forzero errors here. Even a single error will indicate RAM failure.



    Run SeaTools to check the integrity of your HDD. SeaTools for DOS and Windows - How to Use - Windows 7 Help Forums
    Run following tests
    1. Short Drive Self Test
    2. Short generic
    3. Long generic

    If the short generic fails, no need for the long generic.

    Note   Note
    Do not run SeaTools on an SSD as the results will be invalid.

    Run chkdsk
    Disk Check - Windows 7 Help Forums

    Run HDTune to
    • scan for errors, no quick scan but full scan
    • check the health,
    • benchmark.

    It may take some time, but please take the time you need to perform it properly.
    Let me know what the results are
    • of the error scan,
    • make a screenshot of the health of every hard drive and post the screenshots,
    • post screenshots with the benchmark of the
      • transfer rate,
      • access time,
      • burst rate,
      • cpu usage.



    Run Furmark to stress test your GPU. FurMark - GPU Stress Test - Windows 10 Forums

    Note   Note
    Run Furmark for around 30 minutes.

    warning   Warning
    Your GPU temperatures will rise quickly while Furmark is running. Keep a keen eye on them and abort the test if overheating occurs.
    Last edited by axe0; 30 Jan 2016 at 08:04. Reason: typo
      My Computers

  3. Posts : 9
    Windows 10 Pro
    Thread Starter

    Yes, I do use them.
      My Computer

  4. Posts : 14,897
    Windows 10 Pro

    It is recommended to not use ports where the pins are bent/broken
      My Computers

  5. Posts : 9
    Windows 10 Pro
    Thread Starter

    I unplugged the cable. After ten minutes I got a Clock_watchdog_timeout.
      My Computer

  6. Posts : 14,897
    Windows 10 Pro

    I didn't say it was the cause, only that it is recommended to not use it as it may cause more instability.

    Are you running the tests suggested?
      My Computers

  7. Posts : 9
    Windows 10 Pro
    Thread Starter

    Yes, I've ran memtest86+ before without error and I did chkdsk on my drives. Windows fixed an error on my mechanical drive. After that my mechanical drive started to make a strange noise. It had a rythm to it and it kept repeating that rythm. Just to be sure I turned of the pc.
    Still running the other test.

    I do remember something about Prime95 having a bug with skylake processors, so I don't know how useful it is to run this.
      My Computer

  8. Posts : 14,897
    Windows 10 Pro

    Another question for MemTest86+, how many passes completed with Memtest86+?

    I remember that too, you can run the IntelBurnTest fortunately :)
      My Computers

  9. Posts : 9
    Windows 10 Pro
    Thread Starter

    I think about 5 or 6 passes, but I'm not sure. I only know for sure it was about 9h.
    Thanks for the tip, I'll try intelburntest.
      My Computer

  10. Posts : 14,897
    Windows 10 Pro

    You didn't read my suggestions?

    In my first post of this thread I am clearly suggesting a couple of tests to try including IntelBurnTest.
      My Computers


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