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Lenovo Z580 wont boot

Discussion in 'Hardware' started by crushdog, Nov 14, 2014.

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  1. crushdog

    crushdog Thread Starter

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    Here's my sad story (I'm using a Lenovo Z580 laptop with Windows 7):

    On Tues, 11/11/14 I installed all of the critical & important Windows Updates along with 2 additional updates (I don't recall what the additional ones were for).

    After the updates completed I rebooted the machine, but the display did not come on. The lights and fan came on, but no display. I rebooted 3 or 4 more times and nothing changed. I plugged an external monitor into the laptop but got no display on either screen. From there I spent an hour or so powering the machine completely down, removing the battery, then rebooting while trying to enter either Safe Mode with F8 or the BIOS with F2 but each time I did the computer did not respond. A friend suggested removing and replacing the CMOS battery. I did that, put the machine back together, but now when I push the power button the lights and fan come on for about 1 second, go off for about 8 seconds, and that cycle (1 second on, 8 seconds off) repeats until I remove the battery. I did put back the original CMOS battery and the same thing continues to happen.

    I've gone all over the internet for the past 2 days looking for suggestions and nothing I've found or done is resolving the issue.

    Any thoughts or suggestions would be appreciated. Right now I've got a brick, so I'm pretty willing to try anything.

    Steve
     
  2. managed

    managed Trusted Advisor Spam Fighter

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    Unfortunately there's not much you can do with no display.

    Just to be sure - there is nothing on the screen at all, even just after switching on ?

    If you leave it on do you hear Windows start up ?
     
  3. crushdog

    crushdog Thread Starter

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    Allan,

    At this point when I power the machine on (with or without the power cord plugged in) the normal start up lights go on for about one second then the machine shuts off. Then about 8 seconds later it does the same thing and continues to do so until I pull the battery.
     
  4. TerryNet

    TerryNet Moderator

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    When it is plugged in but w/o battery what happens?
     
  5. crushdog

    crushdog Thread Starter

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    Terry,

    If the battery is not plugged in it does not power up at all.
     
  6. TerryNet

    TerryNet Moderator

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    I moved your thread to the Hardware forum, in case this is more serious than the "dumb" thing I outline below.

    My interpretation of your symptoms is that there is a problem with the A/C power supply. It may simply be a loose connection. If your "brick" is the kind that has a removable cord it is not unusual for that to come loose and not be noticed (at least not by me until my laptop dies!). Or maybe it is plugged into a non-working outlet (as when I plug mine into a switched outlet and forget to switch it on!). Or it could be something more serious.

    To complete my interpretation--the battery is exhausted--there is just enough residual juice to give a one second try, then it can output no power (for eight seconds) until it regains its meager strength.
     
  7. crushdog

    crushdog Thread Starter

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    TerryNet,

    Sadly I believe it is something more serious. When the AC is plugged in, the 'charging battery' light goes on, and when I unplug it goes off.
     
  8. TerryNet

    TerryNet Moderator

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    That does sound serious. :(
     
  9. Couriant

    Couriant Trusted Advisor

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    Not to be funny, but I believe that would happen... that the charging light will go off when the AC is disconnected... unless I am missing something...
     
  10. crushdog

    crushdog Thread Starter

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    James,

    My point was that it doesn't seem to be an AC power issue as Terry suggested. Thank you for your insight. I never thought of that.
     
  11. Couriant

    Couriant Trusted Advisor

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    Ahh I re-read it and it sounds like your motherboard may be defective now, or at least the power portion of it. If you cannot run the laptop with only the AC power then that is a very serious issue.
     
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