No power problem after unexpected shutdown

Discussion in 'Alienware M15x' started by Halppls, May 26, 2017.

  1. Halppls

    Halppls Newbie

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    My m15x shutdown while I was in a game last night, may have overheated something, although it didn't feel overly warm at the time.
    Until earlier today the power button would light up when the charging cable is plugged in, but would go off when pressed with no response from the laptop, and then earlier today it stopped lighting up altogether.
    Was hoping to get it started up to give me an error code at least. Anyone experienced similar issues or know what might be wrong with it?
     
  2. maxslo

    maxslo undefined

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    Most likely GPU, i've seen this exact behavior with faulty GPSs numerous times...

    Sent from my LG-H850 using Tapatalk
     
  3. Halppls

    Halppls Newbie

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    Ah, I wouldn't have guessed that. I do have the 260m card which I saw people saying there were problems with. Is there any way I can check it? I thought it would still at least switch on if it was the gpu.
     
  4. kosti

    kosti Notebook Virtuoso

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    Could be the motherboard. My last board failed suddenly by not accepting power through the jack, but weirdly worked with the battery. Needless to say, the battery eventually emptied, leaving me with a dead computer. So it could be that as well. It's quite common on the M15X. I found this site a while back when trying to troubleshoot mine. The problem in this case was the ITE I/O controller.

    http://computer911.byethost10.com/example/e01.html?ckattempt=1&i=1

    Have you tried a power drain procedure (remove battery, unplug power, hold down power button for 20 seconds)?
     
  5. maxslo

    maxslo undefined

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    Yeah like kosti said, do a power drain frist,
    After that i'd try to turn it on on ac only, with battery out, if it trips, do a power drain again and try to turn it on battery only.
    If neither helps, you can remove the GPU and insert the PSU cable, if it doesnt trip, there was your problem, otherwise we'll try diagnosing furter :)
     
  6. bibimona

    bibimona Notebook Enthusiast

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    I just had the same problem today! Did everything mentioned above and nothing light up the alien head.
    Even after remove the GPU, plugged in the power cord is still not lighting up the power button, is that a motherboard/power jack issue now, rather than a GPU issue?

    thanks!
     
  7. King of Interns

    King of Interns Simply a laptop enthusiast

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    I have had same problem before.

    Check the power button board cable. I replaced mine (same cable that connects trackpad to mobo just longer).
     
  8. bibimona

    bibimona Notebook Enthusiast

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    The new motherboard came in yesterday and I replaced it right away. The power jack on the old is indeed burned.
    But there is something else also broken I guess:
    So after I replaced the motherboard and plugged in the power supply, the head lights up (yay!), and I can power it on and even got in to Windows.
    Just at the point I thought I fixed it from death, I noticed that both my monitor software and Throttlestop doesn't not show all the CPU cores and the system is running slow.
    I immediately turned it off and trying to resit the cpu, and after that I can't even turn it back on again. It wont even show the BIOS screen, and the alien head on the case lights up for about few seconds then off. The light on the power supply stays on though.

    Should I suspect a CPU issue then? I will try your suggestion on the power cable thing, but I doubt thats the issue for me.

    Any suggestion is appreciated, really want to bring it back to life even I have to move on and get a new gaming laptop...
     
  9. King of Interns

    King of Interns Simply a laptop enthusiast

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    Pretty sure it is the ribbon cable powering the power button that is faulty. To test. Simply pop up the instrument panel. you will see the power button board is plugged into the mobo. This ribbon cable can get damaged and eventually no longer give power to the power button. This happens quite easily as the ribbon cables are delicate. I would say yours is practically completely broken.

    The trackpad uses the same ribbon cable albeit perhaps a different length. Try swapping it and see. When mine went faulty I swapped the cables and I had power back. The trackpad oddly then lit up but wouldn't work (didn't care as I use mouse) until I replaced the bad cable for good proving it was on its way out.

    The M15x mobo is pretty robust so it is highly unlikely it burnt out. To buy llook here: https://www.ebay.com/p/Dell-Alienware-M15x-Power-Button-Board-Flex-Ribbon-Cable/1719250735
     
    Last edited: Jan 14, 2018
  10. bibimona

    bibimona Notebook Enthusiast

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    Aha, you're right! It is the cable that was broken, after switching the cable my m15x came back from death. Is the cable also provides power for the alien head on aluminum case? I remember before I replaced my mobo, even that head is not lighting up.

    I have another question for you if you don't mind: I've encounter some sudden shutdown while playing game even before all these rescue/replace, and it still happens from time to time after all these. I'd assume it is related to the battery since my battery is completed dead now (after almost 10 years of service :p), because if I removed the battery and play on power supply only it rarely happen. But I have also seen some posts here that "too many connected use devices and power consumption" could also lead to this. It shoudn't be a heat problem since I've monitor the temp which is around 80 only. Have you experience this issue before, and what's your suspicion?
     
    Last edited: Jan 16, 2018
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