driver_irql_not_less_or_equal (mwlu97w8x64.sys) ----> what does this mean?

Anonymous
2013-12-15T19:57:51+00:00

I bought Surface Pro 2 recently. It is a brand new computer. All I have done is to use it doing homework, watching videos. 

But it happened several time recently, I am doing nothing, just letting it on.  it suddenly crashed and let me search for  "driver_irql_not_less_or_equal (mwlu97w8x64.sys)". what does this mean?

Surface | Surface Pro | Network

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Anonymous
2014-09-05T18:06:48+00:00

Hi allenyw80,

Thank you for the reply. I understand you are having the same issue on your replacement device and I know this is a frustrating situation for you. I'm here to guide you in the right direction. 

Please try the following:

  1. Back up your files.
  2. Do a reset.
  3. Go to Charms>Settings>PC settings>One Drive>Sync Settings>Turn off Sync your settings on this PC. This step will isolate the settings from other computers that might affect your Pro 2.
  4. Install all updates.
  5. Install your apps back one by one to see if the problem comes back with certain apps.
  6. If the problem continues, please contact our Support.

Best Regards,

Clare

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  1. Anonymous
    2014-07-01T14:47:28+00:00

    I was having this issue when I first got my Surface.  I have tried all the suggested fixes and making sure I am updated.  None have been effective.    After awhile it stopped but then returned after an update.  My fix is to restore to before the update (which won't help those who are having issues right out of the box).  I then wait a few weeks to see if the update has been modified then reinstall.  If I get the BSOD again, I repeat.  Not the best way to work, but it is better for me than  having my system crash.  I'm a teacher and it is very annoying to have my presentation die and then wait to get it back online.

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  2. Anonymous
    2014-06-20T13:31:43+00:00

    BjBear,

    I'd like to know the result after trying the suggestions given here by Steven_B. Please get back to us.

    Cheers,

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  3. Anonymous
    2014-06-17T13:38:27+00:00

    Hi BJBear,

    Thank you for posting in the Microsoft community. I have merged your post to this thread as it is related to the same issue.

    Please follow Steven_B suggestions and see if that solves the problem.

    Let us know so we can further assist.

    Cheers,

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  4. Anonymous
    2014-06-16T03:36:05+00:00

    I am regularly getting the mwlu97w8x64.sys crash problem. I have the latest firmware, and when the surface pro 2 crashes I don't seem to be doing anything unusual (in fact the Surface is usually doing nothing).

    Is there any fix for this?

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