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Windows 7: Unknown Device

10 Mar 2012   #1
Saba Zubadze

Windows 7 Ultimate 32bit
Unknown Device

Hi everyone,I have a netbook computer running windows 7 ultimate and it shows that I have 2 uknkown device in device manager,device id_s is ACPI\ACCE0001 and ACPI\FNBT0000

My System SpecsSystem Spec
10 Mar 2012   #2

Win7 H.Prem. 32bit+SP1

Hi Saba, see if this helps. Find Drivers for Unknown Device.pdf

My System SpecsSystem Spec
11 Mar 2012   #3
Saba Zubadze

Windows 7 Ultimate 32bit

I followed instruction and it displays the same that device id ACPI\ACCE0001 How I can find it's driver,I don't know what hardware it is.
My System SpecsSystem Spec

11 Mar 2012   #4

Main - Windows 7 Pro SP1 64-Bit; 2nd - Windows Server 2008 R2

One trick is to go to the manufacturer's website and get a detailed list of all the hardware in the computer. Then go through Device Manager item by item and cross of the ones that are installed correctly. Whatever is left on your list after you're done is the unknown device. You can then get the proper driver(s) from the manufacturer.

With Netbooks, wireless network stuff, touchpads, USB hubs and IR stuff are the most common to have trouble with, assuming the things boots and does the basic stuff (sound, video, etc) all right. :)
My System SpecsSystem Spec
11 Mar 2012   #5

Windows 7 Home Premium 32 bit

Check whether Unknown Device Identifier v8.00 helps. Unknown Device Identifier - Freeware Download
My System SpecsSystem Spec
11 Mar 2012   #6

windows 7 home premium 64 bit

Usually, when you buy any hardware the drivers come along with it on a disc. If you lose the driver disc you can always download the necessary drivers from the manufacturer's website. But what do you do when you are not sure of the manufacturer of the hardware?

Every device has a Vendor and Device id associated with it. If you can find this ID, you can find the manufacturer. In Windows it's easy to find the vendor and device id.
  1. Open Device Manager (Control Panel>System>Hardware>Device Manager)
  2. The hardware whose drivers are missing will appear as Unknown device, so it's easier to locate the device.
  3. Right click on the unknown device and click on Properties.
  4. Under the Properties window click on Details tab and select Device Instance Id from the drop down box.
  5. You should see a code similar to this

  6. The portion of the code highlighted in RED is the Vendor ID and the portion highlighted in GREEN is the Device ID. In this example:

    Vendor ID = 8086
    Device ID = 27DC
  7. Once you have obtained both the IDs, proceed to PCI Database. There you can either search for the vendor from the vendor ID or directly get information about the device along with the vendor name by searching with the device ID.
Great isn't it? Now you will never have to go hunting for correct drivers.
My System SpecsSystem Spec
11 Mar 2012   #7
Saba Zubadze

Windows 7 Ultimate 32bit

I have all neccecary drivers like video card and wireless network,I found only one driver it's a hUman interface controller and 2 are still misterious.I don't know what type of hardware is it and who is manufacturer I have an acer acpire one 10.1 with atom n455 I have downloaded driverpacksolution for this device but there was not required drivers for these devices,I don't have a driver's disc,is there any solution? Thanks!
My System SpecsSystem Spec
11 Mar 2012   #8
Microsoft MVP

Win 7 Ultimate x64

You installed the chipset driver from Acer for it?

Acer Support: Downloads & Support Documents - Netbook / Aspire One / AOD255E
My System SpecsSystem Spec
11 Mar 2012   #9
Saba Zubadze

Windows 7 Ultimate 32bit

yes but there is still 3 unknown device in dev manager
My System SpecsSystem Spec
11 Mar 2012   #10

Windows 7 Professional SP1 - x64 [Non-UEFI Boot]

Quote   Quote: Originally Posted by Saba Zubadze View Post
Hi everyone,I have a netbook computer running windows 7 ultimate and it shows that I have 2 uknkown device in device manager,device id_s is ACPI\ACCE0001 and ACPI\FNBT0000
ACPI should have something to do with the netbook battery controller.

The services.msc is "CmBatt", maybe check if its set to automatic & is started.
My System SpecsSystem Spec

 Unknown Device

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