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    Unknown device causing yellow triangle on my pc in device controller

    Discussion in 'Alienware M15x' started by alexmcconnell, Aug 7, 2012.

  1. alexmcconnell

    alexmcconnell Newbie

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    I have an alienware m15x running windows 7 64bit and i am current showing a yellow triangle over my pc when i go into my device manager. When i click on the pic and go to hardware at the top of the list it shows
    Unknown device and the location is Intel(R) PM55 Express Chipset LPC Interface Control, and it says I am missing the drivers for this device (Code 28). Any help would be greatly appreciated because my computers performance has been suffering greatly recently and I believe this to be the problem.
     
    alexmcconnell, Aug 7, 2012
    #1
  2. scoots.

    scoots. Notebook Enthusiast

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    If you open the properties for the device in Device Manager, inside the "Details" tab, what is the longest hardware ID for the unknown device? For example, PCI\VEN_8086&DEV_0046
     
    scoots., Aug 7, 2012
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  3. katalin_2003

    katalin_2003 NBR Spectre Super Moderator

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    katalin_2003, Aug 7, 2012
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