The Notebook Review forums were hosted by TechTarget, who shut down them down on January 31, 2022. This static read-only archive was pulled by NBR forum users between January 20 and January 31, 2022, in an effort to make sure that the valuable technical information that had been posted on the forums is preserved. For current discussions, many NBR forum users moved over to NotebookTalk.net after the shutdown.
Problems? See this thread at archive.org.

    Lenovo X300 will not power on with AC power plugged in

    Discussion in 'Lenovo' started by dafunk, Jan 13, 2012.

  1. dafunk

    dafunk Newbie

    Reputations:
    0
    Messages:
    8
    Likes Received:
    0
    Trophy Points:
    5
    Hello
    I have a Lenovo X300 laptop running Windows Vista.
    The laptop runs great but when I turn it on, it will only power up if the AC adapter is NOT plugged in. If the power is plugged in the Laptop will not power up as soon as I remove the AC adapter and hit the power button the laptop startup and runs fine. When the laptop is turned on I just plug in the AC adapter and everything is good. :confused:
    The battery only last about 20-30 minutes without AC power once plugged in it runs great.
    Thanks
     
    dafunk, Jan 13, 2012
    #1
  2. ConnectDon

    ConnectDon Notebook Consultant

    Reputations:
    95
    Messages:
    106
    Likes Received:
    0
    Trophy Points:
    30
    Will it power up with the AC adapter plugged in and the battery removed? If it does, you likely need a new battery.
     
    ConnectDon, Jan 13, 2012
    #2
  3. dafunk

    dafunk Newbie

    Reputations:
    0
    Messages:
    8
    Likes Received:
    0
    Trophy Points:
    5
    Thank you for the reply.
    No, it will not power up as long as the AC adapter cord is plugged in, even with the battery removed.
     
    dafunk, Jan 14, 2012
    #3
  4. John Ratsey

    John Ratsey Moderately inquisitive Super Moderator

    Reputations:
    7,197
    Messages:
    28,842
    Likes Received:
    2,172
    Trophy Points:
    581
    Can you borrow a different PSU? I wonder whether the BIOS isn't sensing the PSU properly. This can happen if the pin in the centre of the power plug has broken off. Have a look.

    John
     
    John Ratsey, Jan 14, 2012
    #4