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Thread: Locking the BIOS?




  1. #11
    parsec's Avatar
    parsec is offline Senior Member
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    Default Re: Locking the BIOS?

    Hmm, now I see what wardog was asking about earlier, regarding standoffs. That is, the mother board tray may have standoffs mounted from a previous build, that are not used by the new board. Even with an insulator, it could punch through and cause a short.

  2. #12
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    Default Re: Locking the BIOS?

    By standoff, I mean the little (usually brass) nuts that are about 6mm tall that the motherboard screws into. Sometimes if an extra one that shouldn't be there is pressing against the back of the motherboard, it will short out parts of it.

    Cardboard? really? i've never seen anyone do that. unless they are mounting it outside of a case and laying the motherboard on top of a piece of cardboard.
    If your MB is not mounted in a case, then nevermind, it's probably not shorted out on one lol.

    If your motherboard IS mounted and screwed into a case it should most certainly have standoffs. Unless something is terribly wrong. (like screwed directly to the case)

    Kind of look like this:
    Locking the BIOS?-220px-three_types_of_standoffs-jpg

  3. #13
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    Default Re: Locking the BIOS?

    Quote Originally Posted by - wardog - View Post
    And this only happens after some strenuous activity that would generated heat on the mb? Can you elaborate or further describe this piece of thick cardboard, and where it is placed for me(us?) because what I understand you to have said there is you to have fashioned a thick piece of cardboard filling the space between the mb tray and the back of the mb itself nearly as thick as the standoffs are tall.
    EDIT: ie: no ventilation or circulation or cooling air behind the mb.

    Something crawl in between there looking for warmth and die? Shorting something(other than itself :)) while doing so?

    The piece of cardboard is only about 1-2mm thick and is placed to cover the m/b completely at the back.

    I did this because the backplate has no standoffs (the case was given me) so could possibly cause shorting on the m/b.

    The m/b doesn't get warm - normally stays about 78-80 deg F due to 2 fans on the side of the case (1 x 80mm blowing directly onto the CPU fan and 1 x 120mm blowing on to the m/b)

    There are also 2 further fans - 1 x 120mm at the front to cool the HDDs and 1 x 120mm at the back as an exhaust fan.

    All this helps to keep the ancilleries cool with the hottest HDD never rising above 86 deg F.

    So I don't have any worries abut cooling the m/b etc even with the cardboard covering the back.

    .
    Last edited by petersmart; 11-27-2012 at 04:11 PM.

  4. #14
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    Default Re: Locking the BIOS?

    Quote Originally Posted by parsec View Post
    An OS installed in IDE mode will not boot if the SATA mode is changed to AHCI or RAID, that is normal and happens with any version of Windows. XP did not support AHCI mode when introduced, and it still takes some extra effort to get AHCI mode working in XP. I know there are methods of doing that, but I've never done it myself. Your SSD will perform better in AHCI mode, and it is worth it to change. You may not need to reinstall your OS to accomplish that, at least with Windows 7, but I'm not sure about XP.
    Well at the moment with the SSD connected to the SATA 3 port set to IDE, HD Tune shows that it is running at 385 MB/sec and the SATA 3 HDD I have starts at 200MB/sec so even in IDE not too bad.

    In fact for some things like using Shrink 3.2 to re-author a DVD already on a HDD it's actually running TOO fast because the buffer goes to over 1GB and everything stops until it unloads the buffer onto an HDD and even using the video preview only slows this down a little bit. - it can actually re-author a 6GB DVD at around 70 secs and analyse at around 2000-2500 frames/sec then do a full shrink to 4.35GB in around 6-7 mins.

    I also have created a RAMDISK to use the extra memory I have where the speeds are just unreal - an average of 4000 MB/sec normally and up to 5800MB/sec on burst.

    However most programs without a lot of HDD accessing are constrained by the actual speed of the PC so if it's easier to use IDE instead of AHCI then that's ok with me - I already have all the speed I can handle (I think).

    .
    Last edited by petersmart; 11-27-2012 at 04:33 PM.

  5. #15
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    Default Re: Locking the BIOS?

    Quote Originally Posted by petersmart View Post
    The piece of cardboard is only about 1-2mm thick and is placed to cover the m/b completely at the back.

    I did this because the backplate has no standoffs (the case was given me) so could possibly cause shorting on the m/b.
    Phew ..... There are so many electrical things that could go wrong by and or with not using standoffs, namely a solid reliable ground path for the mb, that I simply can't begin to fathom how the mb might still be running. Never mind permanently damaged.

    Go HERE and get that mb some standoffs and screws. And after they're installed pray to the Deity of choice that you haven't permanently damaged the mb or another component or components that resides on the mb.

    Wrong. Just wrong ............ The board has probably been arcing ............ against the I/O backplate looking for a ground. Then ZAP ............ It discharges .............
    #1 - Please, when seeking help, enter the make and model of ALL parts that your system is comprised of in your Signature, or at least the model #'s in your System Specs, then "Save' it.
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  6. #16
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    Default Re: Locking the BIOS?

    Quote Originally Posted by - wardog - View Post
    Phew ..... There are so many electrical things that could go wrong by and or with not using standoffs, namely a solid reliable ground path for the mb, that I simply can't begin to fathom how the mb might still be running. Never mind permanently damaged.

    Go HERE and get that mb some standoffs and screws. And after they're installed pray to the Deity of choice that you haven't permanently damaged the mb or another component or components that resides on the mb.

    Wrong. Just wrong ............ The board has probably been arcing ............ against the I/O backplate looking for a ground. Then ZAP ............ It discharges .............
    No it IS connected and earthed via the screws going through the cardboard to the backplate - the m/b isn't just floating which would make it impossible to connect anything to it - but I will connect standoffs just to be really safe.

    .

  7. #17
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    Default Re: Locking the BIOS?

    Quote Originally Posted by petersmart View Post
    No it IS connected and earthed via the screws going through the cardboard to the backplate - the m/b isn't just floating which would make it impossible to connect anything to it - but I will connect standoffs just to be really safe.
    .
    Turning the screws tight enough to make a reliable ground while using a compressible material such as cardboard/paperboard won't, IMHO, provide a lasting and permanent path for ground. I'm of the opinion what you're experiencing bears this out. Hence the reason all mb's have a highly conductive ring that surrounds every mounting hole that the screw tightens to when threaded into each standoff.

    When we initially build them up, out of the case and on a box, there isn't anything that can electrically make contact with any of the electrical pathways of the mb. Electricity follows the path provided.

    And it's assumed that afterwards, when it installed in the case using standoffs, that all electrical paths are tight and secure. Hence why we go back over the screws a second(or third) time making damn sure we didn't miss one. Electricity follows the path provided.

    Give electricity a chance, such as you have here, to take a path with lessor resistance and you create an intermittent short that will arc. Creating damaging discharges.
    #1 - Please, when seeking help, enter the make and model of ALL parts that your system is comprised of in your Signature, or at least the model #'s in your System Specs, then "Save' it.
    ____If you are overclocking, underclocking, or undervolting any parts, informing us of this and their values would prove beneficial in helping you.

    #2 - G.Skill RAM Configurator for your boardSamsung Memory for your boardLatest AMD Chipset Drivers/WindowsLatest AMD Graphics Drivers/WindowsLatest Intel Drivers

    #3 - Please use the eXtreme Outer Vision Power Supply Calculator found HERE to determine if it might be your PSU at issue.
    ____Consider your PSU to be the foundation from which all else is built upon. Anything built upon a weak foundation is poorly built.

  8. #18
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    Default Re: Locking the BIOS?

    Quote Originally Posted by - wardog - View Post
    Turning the screws tight enough to make a reliable ground while using a compressible material such as cardboard/paperboard won't, IMHO, provide a lasting and permanent path for ground. I'm of the opinion what you're experiencing bears this out. Hence the reason all mb's have a highly conductive ring that surrounds every mounting hole that the screw tightens to when threaded into each standoff.

    When we initially build them up, out of the case and on a box, there isn't anything that can electrically make contact with any of the electrical pathways of the mb. Electricity follows the path provided.

    And it's assumed that afterwards, when it installed in the case using standoffs, that all electrical paths are tight and secure. Hence why we go back over the screws a second(or third) time making damn sure we didn't miss one. Electricity follows the path provided.

    Give electricity a chance, such as you have here, to take a path with lessor resistance and you create an intermittent short that will arc. Creating damaging discharges.
    I believe you could be right as this morning when I turned a light on in the kitchen the PC started up - I have it set up to turn on when I turn on the main power supply to it or press a key on the keyboard.

    MMM - time to install proper standoffs.

    .

  9. #19
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    Default Re: Locking the BIOS?

    Quote Originally Posted by petersmart View Post
    I believe you could be right as this morning when I turned a light on in the kitchen the PC started up - I have it set up to turn on when I turn on the main power supply to it or press a key on the keyboard.

    MMM - time to install proper standoffs.

    .
    Get however many standoffs as there are mounting holes on this particular mb. No more or no less. Extra's installed are NOT a bonus. Placement is crucial.

    And tighten the standoffs down to the mb tray before lowering the mb and fastening it down with the screws.

    hehe, turned on via a wall switch ..................
    #1 - Please, when seeking help, enter the make and model of ALL parts that your system is comprised of in your Signature, or at least the model #'s in your System Specs, then "Save' it.
    ____If you are overclocking, underclocking, or undervolting any parts, informing us of this and their values would prove beneficial in helping you.

    #2 - G.Skill RAM Configurator for your boardSamsung Memory for your boardLatest AMD Chipset Drivers/WindowsLatest AMD Graphics Drivers/WindowsLatest Intel Drivers

    #3 - Please use the eXtreme Outer Vision Power Supply Calculator found HERE to determine if it might be your PSU at issue.
    ____Consider your PSU to be the foundation from which all else is built upon. Anything built upon a weak foundation is poorly built.

  10. #20
    profJim's Avatar
    profJim is online now Chief Munchkin + moderator
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    Default Re: Locking the BIOS?

    Sounds like a real turn on to me

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