Troubleshooting "Unknown Device" Windows XP

By g4mer
Sep 10, 2010
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  1. I don't know when and how i got these two unkown devices in Device Manager. I tried to update them with automatic updates over the internet and with some CDs but failed. I hope someone can help me resolve this problem.
  2. LookinAround

    LookinAround TechSpot Chancellor Posts: 8,361   +167

    • Make sure all your devices are connected and powered on
    • Click Start->Run, enter: msinfo32. Click the + sign next to Components to expand it
    • Click Problem Devices. Anything appear?
    • If yes, click on it, Ctrl-A to select all, Ctrl-C to copy it, Ctrl-V to paste into next post
    • On the other hand, if no devices are listed, tell me so
  3. g4mer

    g4mer TechSpot Enthusiast Topic Starter Posts: 340

    This is what i got:

    Not Available AVSTREAM\CXTUNE.VEN14F1.US6618\5&2D94CE2F&0&1 The drivers for this device are not installed.

    Im not sure if thats it because there are two unknown devices here it shows only one.
  4. LookinAround

    LookinAround TechSpot Chancellor Posts: 8,361   +167

    OK.

    1) I can tell from the ID you just posted, this device you just reported isn't a Plug and Play device but i'll try to see if i can track it down

    2) Also do the following in Device Manager for EACH of the unknown devices you see in DevMgr
    > Rt click each unknown device, select Properties
    > Select the Details tab
    > In the pull down menu you should find a menu item you can select named something like Device Instance Id (it may have a slightly different name as i see you run Vista. But it should start with the word Device)

    Vista should let you copy/paste the ID. Post both of the Device IDs you find in DevMgr for each unknown device
  5. LookinAround

    LookinAround TechSpot Chancellor Posts: 8,361   +167

    btw.. do you have a TV tuner card or something similar installed in your machine???
  6. g4mer

    g4mer TechSpot Enthusiast Topic Starter Posts: 340

    Yes, i have WinFast TV2000XP

    I have Windows XP not Vista.
    Here it is:

    First Unknown device:
    AVSTREAM\CX88XBAR.VEN14F1.CNXT\5&2D94CE2F&0&0

    Second:
    AVSTREAM\CXTUNE.VEN14F1.US6618\5&2D94CE2F&0&1

    ***EDIT***

    When i right click one of those unknown devices and go to Properties, under General Tab, Location i see:
    -on WinFast TV2000 XP Global/Global TV (XC2028)
    I have CD with drivers, but i always fail to update it.
  7. LookinAround

    LookinAround TechSpot Chancellor Posts: 8,361   +167

    Some more info

    Windows automatic updates over the internet
    > Windows only keeps plug and play drivers in its online database
    > Neither of the device IDs you reported are for Plug and Play (PnP) devices (PnP device IDs have a different format)
    > So you won't be able to use Windows to try and find those drivers

    Finding drivers for your unknown devices
    > So neither of those IDs are PnP devices
    > But i believe both those IDs are for your TV card and from its vendor

    Try looking for drivers on vendor website (looks like its made by Leadtek?)
  8. g4mer

    g4mer TechSpot Enthusiast Topic Starter Posts: 340

    I completly removed drivers for tuner and installed older versions and that solved the problem. Thanks for help.
  9. jaydeee

    jaydeee Banned Posts: 24

    troubleshooting unknown problem is difficult. :(

    anyway, if you cannot do it manually then do it automatically, use a tool to scan your devices and download/install best driver for it. I use tool from http ://xpdrivers. com/index.cfm

    I hope it helps.
  10. LookinAround

    LookinAround TechSpot Chancellor Posts: 8,361   +167

    Great news! :grinthumb Thanks for providing the update!


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