Windows 7 Forums
Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.

Windows 7: unknown device help

24 Aug 2009   #1

windows 7
unknown device help

i installed the latest windows 7 demo and everything seems too work good after i installed all my laptop is a compaq presario f500.i just have one thing in my device manager that says "unknown device"i clicked on properties and it says"microsoft acpi-compliant system" i updated the bios but that doesnt seem too do it.there is a reference too setupapi.dll in the properties there anyway to fix this,or should i disable it?thanks

My System SpecsSystem Spec
24 Aug 2009   #2

Windows 7 Pro X64 SP1

At a guess, you may need to install the nVidia chipset drivers for your notebook.

HP/Compaq has no Win7 drivers for it, but the Vista drivers may work:

Select software and drivers*

Do you get (from the Win7 install, or Windows Update) good drivers for the notebook's graphics, sound, etc.? It'd be nice if the Windows 7 installer included every conceivable driver, but it may not.
My System SpecsSystem Spec
25 Aug 2009   #3
Microsoft MVP


In Device Manager, right click on the device and select Properties, then the Details tab, then look at the hardware ID.

For PCI devices you'll need the 4 characters after the VEN_ and the 4 characters after the DEV_
For USB devices you'll need the 4 characters after the VID_ and the 4 characters after the PID_
For all other devices you'll need the entire string of characters there.

For PCI devices, research those numbers at:
For USB devices, research those numbers at:

This will tell you what the device is.
First, visit the device manufacturer's website to see if they've got more current drivers available.

If not, then use Google with that device name and terms like "Windows 7 driver" and/or "Windows Vista driver". Rooting through the search results will often yield something usable - but it's all trial and error.
My System SpecsSystem Spec

25 Aug 2009   #4
Microsoft MVP

Windows 7 Ultimate 32bit SP1

Here's a small tool that may help you find the problem quicker and easier.

The tool will check for any Devices that have a red or yellow warning in their Device Manager, and report what the problem appears to be. The "Problematic Devices" section may contain items such as:
========== Problematic Devices =========

Audio Device on High Definition Audio Bus (Not configured)
Hamachi Network Interface (Disabled)
The first command-line option (1) will just produce this list of problems.
The second option (2) will enumerate all the devices present on the system (as well as checking for problems
a [*] indicates a hidden device, and a [!] indicates a problem (which will be listed in the "Problematic Devices" section).

The third option (3) will also show devices that are either not present or not loaded, preceding them with a [-]. You can also invoke this option with a /showall switch, for example, typing this from a CMD window:
DevDiag /showall

Download DevDiag, and save it to your Desktop:
WTT Download Page (recommended)
Direct Download
  • If you are using Vista or Windows 7, please right-click DevDiag.exe and select Run As Administrator. Otherwise, simply double-click the program to run it.
  • At the options screen, please type 2 and hit Enter.
  • The tool will take a few moments to scan. When finished, a report should pop-up, also available on your Desktop (DevDiag.txt).
My System SpecsSystem Spec
25 Aug 2009   #5

windows 7

sorry i didn't reply quicker,i was at work.i installed all the standard vista drivers for my windows 7 installation,from the hp website.after i installed the chipset drivers,i pointed the unknown device too that folder and told it too search for a new driver in there.i just couldnt get it too install correctly.iam gonna try those things on the other 2 posts too see if it will work.

here are the results from using Devdiag:

DevDiag by jpshortstuff (10.08.09)
Log created at 03:03 on 25/08/2009 (Hellfire)

========== Problematic Devices =========

(No problematic devices found)

========== Device List =========[*] = Hidden
[!] = Problem (listed above)
[-] = Not present

Microsoft AC Adapter
Microsoft ACPI-Compliant Control Method Battery
Microsoft Composite Battery

CD-ROM Drive

ACPI x86-based PC

Disk drive

NVIDIA GeForce Go 6100

IDE Channel (2)
NVIDIA nForce Serial ATA Controller
Standard Dual Channel PCI IDE Controller

Standard PS/2 Keyboard

Ancillary Function Driver for Winsock
Bitlocker Drive Encryption Filter Driver
Common Log (CLFS)
Disk Virtual Machine Bus Acceleration Filter Driver
Dynamic Volume Manager
Hardware Policy Driver
Kernel Mode Driver Frameworks service
LDDM Graphics Subsystem
Link-Layer Topology Discovery Mapper I/O Driver
Link-Layer Topology Discovery Responder
Mount Point Manager
NativeWiFi Filter
NDIS System Driver
NDIS Usermode I/O Protocol
NetIO Legacy TDI Support Driver
NSI proxy service driver.
Offline Files Driver
Performance Counters for Windows Driver
QoS Packet Scheduler
RDP Encoder Mirror Driver
Reflector Display Driver used to gain access to graphics data
Remote Access IPv6 ARP Driver
Security Driver
Security Processor Loader Driver
Storage volumes
System Attribute Cache
TCP/IP Protocol Driver
TCP/IP Registry Compatibility
User Mode Driver Frameworks Platform Driver
Virtual WiFi Filter Driver
WFP Lightweight Filter
Windows Firewall Authorization Driver

Conexant High Definition Audio

HDA CX20549 Soft Modem

Generic PnP Monitor

Synaptics PS/2 Port TouchPad

[*]Microsoft ISATAP Adapter
[*]Microsoft Teredo Tunneling Adapter
[*]WAN Miniport (IKEv2)
[*]WAN Miniport (IP)
[*]WAN Miniport (IPv6)
[*]WAN Miniport (L2TP)
[*]WAN Miniport (Network Monitor)
[*]WAN Miniport (PPPOE)
[*]WAN Miniport (PPTP)
[*]WAN Miniport (SSTP)
Broadcom 802.11b/g WLAN
NVIDIA nForce Networking Controller

AMD K8 Processor (2)

[*]ACPI Power Button
[*]File as Volume Driver
[*]Terminal Server Keyboard Driver
[*]Terminal Server Mouse Driver
[*]Volume Manager
ACPI Fixed Feature Button
ACPI Sleep Button
ACPI Thermal Zone
AMD Address Map Configuration
AMD DRAM and HyperTransport(tm) Trace Mode Configuration
AMD HyperTransport(tm) Configuration
AMD Miscellaneous Configuration
Composite Bus Enumerator
Direct Application Launch Button (2)
High Definition Audio Controller
Microsoft ACPI-Compliant Embedded Controller
Microsoft ACPI-Compliant System
Microsoft System Management BIOS Driver
Microsoft Virtual Drive Enumerator Driver
Microsoft Windows Management Interface for ACPI
NVIDIA nForce System Management Controller
PCI bus
PCI standard ISA bridge
PCI standard PCI-to-PCI bridge (3)
Plug and Play Software Device Enumerator
Remote Desktop Device Redirector Bus
System CMOS/real time clock
UMBus Enumerator
UMBus Root Bus Enumerator
[-][*]Motherboard resources (4)
[-][*]System board
[-]Direct memory access controller
[-]High precision event timer
[-]Numeric data processor
[-]NVIDIA nForce PCI System Management
[-]PCI standard RAM Controller (8)
[-]Programmable interrupt controller
[-]System speaker
[-]System timer

Standard Enhanced PCI to USB Host Controller
Standard OpenHCD USB Host Controller
USB Root Hub (2)

[*]Generic volume (2)

[*]Generic volume shadow copy


it didnt show any errors when i ran step 2.iam not sure why it didnt show up for,cause its still in device manager.ill try the other thing and see what happens.

update 2: the hardware ids say:


update 3: it was saying on another page that the hardware id "*HPQ0006" had something too do with either TPI drivers or quick launch buttons drivers.i'am still trying too figure out what else i can install that will fix it.
My System SpecsSystem Spec
25 Aug 2009   #6
Microsoft MVP

Windows 7 Ultimate 32bit SP1

This Wiki article gives a bit more to understanding the acpi-compliant system Advanced Configuration and Power Interface - Wikipedia, the free encyclopedia
My System SpecsSystem Spec

 unknown device help

Thread Tools

Similar help and support threads
Thread Forum
Unknown device in device manager after Bios default settings are
applied. Sorry that last word didn't get in the subject line. So: These two values are: USB\VID_0CF3&PID_3000&REV_0200 USB\VID_0CF3&PID_3000
Unknown device In device manager, by a virus ?
Hello everyone, I hope you could give me some clue that may have caused the appearance of an unknown device. All information here : First, That was solved by uninstalling and rebooting, did not appear anymore. But as...
System Security
Unknown Device in Device Manager/Show Hidden Devices
I have a Toshiba laptop, model L505-ES5018. I had Windows 7 Home Premium 64 bit installed on here, but decided to reformat my hard drive using Windows 7 Ultimate 64 bit. After the reformat was finished, I ran Windows Update and it found several items to download and install for me. I noticed...
base system device, video controller and unknown device missing
hie i have just installed window 7 and this devices are missing, any help will be very much appreciated. base system device device id PCI\VEN_1217&DEV_7110&SUBSYS_117C10&PEV_00 PCI\VEN_1217&DEV_7110&SUBSYS_117C10CF PCI\VEN_1217&DEV_7110&CC_088000 PCI\VEN_1217&DEV_7110&CC_0880 UNKNOWN...
Device Manager reports Unknown Device & explorer crash
How do i figure out what driver or even component windows wants software for when in the device manager under other devices it lists an unknown device and windows update cannot find anything. Oh and is it appropriate for me to use this topic to ask another question regarding explorer.exe as...

Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 12:44.
Twitter Facebook Google+