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HP Keyboard LEDs Blinking

Discussion in 'PC Hardware' started by James Martin, 2018/05/14.

  1. 2018/05/14
    James Martin

    James Martin Geek Member Thread Starter

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    I have been asked to do a system recovery on an HP laptop, and during several required reboots (after installing a large batch of Windows security updates), the unit screen went blank during restart (which is normal), but it stayed that way, and the only thing I knew to do was to hold the power button down and do a hard boot.

    But before I did a hard boot, I noticed the LED lights on the caps lock, and the number lock keys, were blinking three blinks at a time - pausing - and then repeating the process over and over.

    Is that a code for a bad memory module?

    Since installing those many updates, the process never repeated itself, and the PC seems fine.
     
    Last edited: 2018/05/14
  2. 2018/05/15
    retiredlearner

    retiredlearner SuperGeek WindowsBBS Team Member

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  4. 2018/05/15
    James Martin

    James Martin Geek Member Thread Starter

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    I ran a memory test in DOS with MemTest86, but everything checked out OK.

    I downloaded Crucial's memory scanner, and they don't even stock memory for this laptop anymore, although I'm sure a few sticks can be had somewhere if truly needed.

    Many pardons for the dead link. It must be cookie dependent. For what it's worth, This model is an HP G72 Notebook PC with a dual-core processor.

    All seems to be well for the moment, but HP's Recovery Disk Creator would not let me make a recovery disk (says one has already been made). If the owner is serious about preserving the disk, they need to invest in some imaging software.
     
  5. 2018/05/16
    retiredlearner

    retiredlearner SuperGeek WindowsBBS Team Member

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    I think the ONLY 1 (one) Recovery disc option came in with W8.0 - you had to choose disc or flash drive.
     
  6. 2018/05/17
    James Martin

    James Martin Geek Member Thread Starter

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    Oops!

    Spoke too soon.

    I did a restart this morning, and the laptop hung again. I am currently running HP's own memory diagnostic tool, and I may set the BIOS to do a visual memory test at each and every boot and see what happens.

    If I remember correctly, my old MSI XP desktop used to hang at boot up if it didn't like certain USB devices. The only USB device I have plugged into the HP at the moment is a wireless Logitec mouse transceiver.
     
  7. 2018/05/17
    James Martin

    James Martin Geek Member Thread Starter

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    Interesting video...

     
  8. 2018/05/18
    retiredlearner

    retiredlearner SuperGeek WindowsBBS Team Member

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    I would prefer some talking rather than the repeat music! Suggests dirty contacts???
     
  9. 2018/05/18
    James Martin

    James Martin Geek Member Thread Starter

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    Sounds like it.

    I wonder if a brief shot of contact spray (to the slots and the connectors) would be a viable alternative. I used to spray my daughter's Game Boy cartridges and cartridge slot on occasions when the unit acted up.
     
  10. 2018/05/19 at 20:03
    retiredlearner

    retiredlearner SuperGeek WindowsBBS Team Member

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    I watched the video James, and I did hope the guy had eliminated ESD's while handling the RAM?
    He appeared to use a rubber (eraser) to clean the contacts rather vigorously!
    I have used in the past a soft pencil tip eraser and wiped (with lint free cloth) clean with CRC contact cleaner.
    Then blown dry completely and all over the m/b etc. including the fan which was accessible in the video.
    If you have the time - it would be useful to eliminate this possibility.
     

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