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Acer Aspire 5742 Boot loop (restarting)

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    #1

    Acer Aspire 5742 Boot loop (restarting)

    Hey guys, recently my friend brought me this laptop which shows common problem of restarting it self.Here are the specifications of the laptop and nature of its behavior.

    Model: Acer Aspire 5742
    MB Model: LA-6582P



    Signs:

    when its plug into a adapter 3.3v and 5v are up and after pressed power button power up the notebook with lights with the initial fan spin.
    thereafter within 5 or 6 secs its restarting again automatically. no post screen and nothing. ended up with a boot loop.
    no sign of heating chips, no wired noises, no shorted caps, no defected mosfets (no shorted ones but i am not sure about open mosfets).
    I hv gone through the entire mobo and i hvnt found anything.

    Guys plz guide me to some point which i start to looking at this problem.
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    #2
    Re: Acer Aspire 5742 Boot loop (restarting)

    integrated vga ?
    when power on, check all major voltage coil

    Comment

      #3
      Re: Acer Aspire 5742 Boot loop (restarting)

      all coil voltage parfect and my mechine after five minuts shut off i change hm55 its short after change come display

      Comment

        #4
        Re: Acer Aspire 5742 Boot loop (restarting)

        Try reflashing BIOS first. If it still doesn't work, change chipset as mentioned above.
        Originally posted by PeteS in CA
        Remember that by the time consequences of a short-sighted decision are experienced, the idiot who made the bad decision may have already been promoted or moved on to a better job at another company.
        A working TV? How boring!

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          #5
          Re: Acer Aspire 5742 Boot loop (restarting)

          Is there a HDD plugged in? I worked on one of these last year, presumed it would be a board failure, it was actually a faulty HDD causing the boot loops.
          Dell E7450 | i5-5300U | 16GB DDR3 | 256GB SSD

          Comment

            #6
            Re: Acer Aspire 5742 Boot loop (restarting)

            Hello guys I had the same problem. How did you resolve it?

            Comment

              #7
              Re: Acer Aspire 5742 Boot loop (restarting)

              Sounds a lot like it's just power cycling, as if there's a bad solder joint or some weird protection circuit making it shut down and retry over and over again, like snow or ice on power lines or the like...
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                #8
                Re: Acer Aspire 5742 Boot loop (restarting)

                i had once one with same problem, changed the two capacitors in the 3.3 and 5v and it was ok.

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