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USB not being picked up

  • 15-02-2007 10:11am
    #1
    srdb20
    Registered Users, Registered Users 2 Posts: 1,175 ✭✭✭


    Lads,

    i have a slight problem with an XP build, USB devices seem to be disabled.

    They dont appear in my computer or Disk Management.

    I have tried enabling removeable storage services etc...

    but still no joy, any ideas on where it could be disabled from.

    Cheers


Comments

  • #2
    maceocc2
    Registered Users, Registered Users 2 Posts: 443 ✭✭maceocc2


    Go to your BIOS settings and set them to "Enabled", should do the trick


  • #3
    srdb20
    Registered Users, Registered Users 2 Posts: 1,175 ✭✭✭srdb20


    Cheers maceocc2,

    They already are, i can boot from usb devices before going into windows.

    but once in wondows they dont get picked up, they are gettign power but i just cant get windows to pick them up.

    Any and all help appreciated lads.


  • #4
    maceocc2
    Registered Users, Registered Users 2 Posts: 443 ✭✭maceocc2


    Thats strange,

    Are the USB ports visible in the device manager?


  • #5
    8T8
    Closed Accounts Posts: 4,757 ✭✭✭8T8


    Check the disk management console there aren't any drive letter conflicts just on the off chance that might be the cause.


  • #6
    srdb20
    Registered Users, Registered Users 2 Posts: 1,175 ✭✭✭srdb20


    Sorry for taking so long to get back lads,

    I found out what it was, there is a missing .SYS file (USBSTOR.SYS) it should be in C:\WINDOWS\system32\drivers, but its not, also missing the associated registry entry below.

    HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\USBSTOR

    If the above file is missing the computer will not discover the USB removeable drives, but will still power usb attached keyboards and mice!

    On a related note, .sys fiels can only be copied into directorys they cannot be installed.

    If i was to import a reg key with the appropriate info and place the .SYS file in the right location, will my USB key get picked up?


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  • #7
    8T8
    Closed Accounts Posts: 4,757 ✭✭✭8T8


    It's a possibility it will work if thats the only item that was deleted. There are a bunch of other USB entries like usbhub, usbohci etc. in the same area.

    That is very odd that XP would be missing those files did the machine have a spyware problem as some point as that is the only thing outside of RAM corruption I could think of that would go around doing that.

    Give it a go & see what happens.


  • #8
    srdb20
    Registered Users, Registered Users 2 Posts: 1,175 ✭✭✭srdb20


    Well its working again, i managed to clean up his whole computer as well.

    I was fixing a machine for a friend, i did pull some spyware off it (so it could easily have been that or a a virus maybe), and installed all the latest updates so it should be ok.

    Thanks for all the help guys

    Cheers


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