Lenovo C340 / C440 - Post issue.

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  • katfish
    Senior Member
    • Jul 2016
    • 76
    • USA

    #1

    Lenovo C340 / C440 - Post issue.

    Curious if anyone has run across this problem. Power on, no post. HDD led comes on, as does the monitor led. Then after 5 seconds or so, hdd led goes out, monitor light fades in and out. No picture, no boot.

    Occasionally it will post and boot and run ok. Most of the time it requires power cycling several times to get it to boot.

    Swapped out the mainboard, same problem with the replacement board. Tried removing everything not needed from the board, and unplugged all cables not needed, no change. New ram, no change. New power adapter, no change. Processor, no change. Disconnected LCD from mainboard, tried with HDMI external, no change.

    But once in a while ... if I keep cycling it, it will boot and run ok. I've seen other posts online, and a youtube video showing the same issue. Seems to be a common problem, however, no particular fix has been mentioned.
  • mcplslg123
    Badcaps Legend
    • Jun 2015
    • 7262
    • india

    #2
    Re: Lenovo C340 / C440 - Post issue.

    i will doubt on a corrupt bios. I faced this same issue on a lenovo c460 and flashing the bios made it boot every time. Another thing, have you removed wifi card??

    Comment

    • shaykath49
      New Member
      • Jul 2018
      • 1
      • bangladesh

      #3
      Re: Lenovo C340 / C440 - Post issue.

      usb poblem

      Comment

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