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Thread: ASRock CoreHT 252B Video Locks Up/Freezes PC




  1. #1
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    Default ASRock CoreHT 252B Video Locks Up/Freezes PC

    * Update: Issue Resolved - See Post #13 *

    I have a CoreHT 252B mini PC that I've owned since September, 2011 that I'm having some video issues with. I'm using it as a media center running Windows 7 Pro 64-bit and have the PC hooked up to my 46" TV via HDMI at 1920x1080. The problem is that while watching videos fullscreen, the PC sometimes scrambles the video with horizontal lines. This isn't limited to a single application; I've had it happen in Windows Media Center, Windows Media Player, Youtube, and Netflix via web browser. When it happens, the PC is completely unresponsive; the keyboard/mouse do nothing and I cannot ping it with another machine on my network. The only fix is to reboot the PC. Here's a video of the display after a lock up:


    Initially I thought the PC might be overheating, so I ran some CPU stress tests with Prime95 while logging temperatures with CoreTemp. I ran Prime95 for hours with the temperature maxed out around 86C for each core and it never locked up. I then ran FurMark, a GPU stress testing tool while again logging temperatures with CoreTemp. Within 5 minutes of the 15 minute stress test at 800x600, the PC locked, which is when I took the video posted above. The temperature was barely over 70C. This tells me it isn't a heat issue and is likely GPU or video driver related.

    As far as drivers go, I've experienced the issue with 4 different versions:

    Version 8.15.10.2372 installed early September (downloaded from Asrock; still the current driver listed under downloads as version 15.22.2.64.2372)
    Version 8.15.10.2509 installed on 9/25/2011 (downloaded from Intel)
    Version 8.15.10.2559 installed on 11/22/2011 (downloaded from Intel) <--- no longer listed on Intel's site
    Version 8.15.10.2622 (just posted to Intel's site on Feb. 3, 2012)


    I found it interesting that the third driver is no longer listed on Intel's website (and found a thread about this with as well). Also, the release notes for 8.15.10.2509 lists a "Fixed issue" similar to the one I'm experiencing: "Resolved intermittent crashing when an HDMI monitor is connected."

    I've opened cases with both Intel and ASRock. Intel said to "update drivers or contact the manufacturer" -- Yeah, thanks. ASRock said I could RMA the unit, but I'm hesitant because I'm not sure it's a hardware issue.

    So, I'd like feedback on the following:

    1. Is there anyone else with a CoreHT 252B experiencing this issue? Can you reproduce it with GPU stress testing?
    2. Does this sound like a driver or hardware issue?

    Edit: It looks like someone else is having the same issue, though I don't know what type of PC they have: HD3000 Freeze on Vimeo
    Last edited by Eck; 03-11-2012 at 01:42 AM. Reason: Added update.

  2. #2
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    Default Re: ASRock CoreHT 252B Video Locks Up/Freezes PC

    Have you tested a Ivy Bridge driver? Try 8.15.10.2598.

  3. #3
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    Default Re: ASRock CoreHT 252B Video Locks Up/Freezes PC

    Quote Originally Posted by Borc View Post
    Have you tested a Ivy Bridge driver? Try 8.15.10.2598.
    Version 8.15.10.2598 wouldn't install. I thought it might have been because I already have a newer version, 8.15.10.2622 installed, but entries in the install log make me think it's incompatible:

    * GFX HW not found; disabling HDMI driver install
    Removed INF = C:\Users\Eric\Desktop\sandy\ibxHDMI\IntcDAud.inf
    ! Didn't find any INF's that match active hardware
    IIF will NOT initiate reboot
    Exit code = 0xA005
    ResultCode = 40965
    <<< 2/04/2012 15:00:29:095

  4. #4
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    Default Re: ASRock CoreHT 252B Video Locks Up/Freezes PC

    It is compatible, I already installed this driver on my HD3000. You have to edit the inf. If you want I upload my inf for this driver.

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    Default Re: ASRock CoreHT 252B Video Locks Up/Freezes PC

    Quote Originally Posted by Borc View Post
    It is compatible, I already installed this driver on my HD3000. You have to edit the inf. If you want I upload my inf for this driver.
    Sure, send me your inf or tell me what to add/edit and I'll try again.

    Why are you running this driver? What problems were you having that it resolved?

  6. #6
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    Default Re: ASRock CoreHT 252B Video Locks Up/Freezes PC

    I'm testing drivers sometimes, that's why. Do you have a mobile Sandy Bridge CPU? Try my attached inf.


    Do you have downloaded 2598 from station-drivers? They look customized, I mean the cat file. Therefore it won't work, if it won't work with my inf I have to upload my version of 2598 build to make sure it works. Because I can't try the station-driver version now.

    You could try the following. In my inf

    CatalogFile=igdlh.cat

    change to

    CatalogFile=kit40926.cat

    And rename my inf to kit40926.inf
    Attached Files Attached Files
    Last edited by Borc; 02-05-2012 at 07:41 AM.

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    Default Re: ASRock CoreHT 252B Video Locks Up/Freezes PC

    Quote Originally Posted by Borc View Post
    I'm testing drivers sometimes, that's why. Do you have a mobile Sandy Bridge CPU? Try my attached inf.


    Do you have downloaded 2598 from station-drivers? They look customized, I mean the cat file. Therefore it won't work, if it won't work with my inf I have to upload my version of 2598 build to make sure it works. Because I can't try the station-driver version now.

    You could try the following. In my inf

    CatalogFile=igdlh.cat

    change to

    CatalogFile=kit40926.cat

    And rename my inf to kit40926.inf
    I experienced the same issue with this driver installed. I'm going to RMA the unit in the next week or so. I'll update this post on how the replacement fares.

  8. #8
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    Default Re: ASRock CoreHT 252B Video Locks Up/Freezes PC

    Dont know a lot about these mini pc's but did you overclock it at all?

  9. #9
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    Default Re: ASRock CoreHT 252B Video Locks Up/Freezes PC

    if your mb lets you alter anything in the bios then you might be able to tweak the igpu voltage and or memory voltage a little,probably not enough is causing it to lock up? looked to see if theres any bios updates for that motherboard?
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    Default Re: ASRock CoreHT 252B Video Locks Up/Freezes PC

    Quote Originally Posted by kick View Post
    Dont know a lot about these mini pc's but did you overclock it at all?
    Nope, I haven't touched any settings in the BIOS.

    Quote Originally Posted by wazza300 View Post
    if your mb lets you alter anything in the bios then you might be able to tweak the igpu voltage and or memory voltage a little,probably not enough is causing it to lock up? looked to see if theres any bios updates for that motherboard?
    I thought about messing with the GPU voltage, but I don't know if that would help. Would you suggest undervolting or overvolting it?

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