Windows 10: What is ACPI driver?

  1.    24 Jul 2017 #1

    What is ACPI driver?


    I found a program on SourceForge that supposed to find drivers that are not installed on the computer. I have a device that is labelled as unknown so I used this free software to figure it out. Apparently it requires an ACPI driver? What is it and what does it do?
      My ComputerSystem Spec

  2.    24 Jul 2017 #2

    What is the make and model# of your computer?
    If your computer uses a UEFI Bios, then you may need the ACPI Driver http://www.acpi.info/
    Go to the computer/motherboard manufacturers support/download drivers site, type in your model# and choose your version of Windows 10 (ie) 32bit or 64bit and download the ACPI driver for your model.
      My ComputerSystem Spec


  3. Posts : 32,368
    Triple boot - Win 10 Pro, Win 10 Pro Insider (2) - (and a sprinkling of VMs)
       24 Jul 2017 #3

    Miss Bad Wolf said: View Post
    I found a program on SourceForge that supposed to find drivers that are not installed on the computer. I have a device that is labelled as unknown so I used this free software to figure it out. Apparently it requires an ACPI driver? What is it and what does it do?
    Getting drivers for your system from sources other than MS, the device hardware manufacturer, or your OEM is risky. Please post what this program is and update your system specs so we have an idea what you have. At the bottom of any of your posts, you will see this:
    Click image for larger version. 

Name:	2017-07-24_19h32_55.png 
Views:	31 
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ID:	145432

    Click on it, you will see this:
    Click image for larger version. 

Name:	2017-07-24_19h29_51.png 
Views:	32 
Size:	3.1 KB 
ID:	145431

    Click on it, follow the instructions, and fill in as much as possible. Make and model (complete) of your system is most important.


    Thanks, TC
      My ComputersSystem Spec

  4.    24 Jul 2017 #4

    It is an Asus Eee PC.
      My ComputerSystem Spec

  5.    24 Jul 2017 #5

    Turn the laptop over and there is a sticker with the model # on the bottom: Find your model and follow the instructions in post #2 https://www.asus.com/us/search/resul...t=False&Page=1
      My ComputerSystem Spec

  6.    24 Jul 2017 #6

    Miss Bad Wolf said: View Post
    I found a program on SourceForge that supposed to find drivers that are not installed on the computer. I have a device that is labelled as unknown so I used this free software to figure it out. Apparently it requires an ACPI driver? What is it and what does it do?
    The Windows ACPI driver, Acpi.sys, is an inbox component of the Windows operating system. The responsibilities of Acpi.sys include support for power management and Plug and Play (PnP) device enumeration. On hardware platforms that have an ACPI BIOS, the HAL causes Acpi.sys to be loaded during system startup at the base of the device tree. Acpi.sys acts as the interface between the operating system and the ACPI BIOS. Acpi.sys is transparent to the other drivers in the device tree. Other tasks performed by Acpi.sys on a particular hardware platform might include reprogramming the resources for a COM port or enabling the USB controller for system wake-up.

    Shamelessly ripped off from:
    Acpi.sys: The Windows ACPI Driver (Windows Drivers)
      My ComputerSystem Spec

  7.    25 Jul 2017 #7

    I used to get that unknown device on my older ASUS desktop PC's. I hunted around the ASUS site and found the needed driver. Then did an update driver from device manager and pointed to the downloaded driver. Now its installed during setup, or shortly after via Windows update. I haven't had to install it manually for a while now. Not since I upgraded to Windows 10 "I think"? Memories not what it should be some times. Right click the unknown device in device manger, select update driver, and then let it look online. It will seem like its taking forever but just let it do its thing and see if you get lucky. If that doesn't work then go hunting for it. Looking at my saved drivers for that PC, ATK is what I think had the ACPI driver in it.
      My ComputerSystem Spec


  • Posts : 3,149
    10.5 Home 1803 x64
       25 Jul 2017 #8

    ACPI is required to properly shutdown, sleep, wakeup a computer, also to manage power profiles and etc.
      My ComputerSystem Spec


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