Keyboard and Touchpad Crashes When Installing Update KB890830

Discussion in 'Windows Update' started by Sombrero, Mar 13, 2009.

  1. Sombrero

    Sombrero Guest

    Keyboard and Touchpad Crashes with Windows Update KB 890830 -
    Malicious Software Tool - March 2009.

    After installing the above update on a Fujitsu Lifebook E 8410 Laptop
    (Windows Vista Business) , I lost use of both my Keyboard and my Touch
    Pad. The wired USB Mouse works OK. Used Windows Restore and the
    system returned to normal.

    When installing KB 890830, my Bit Defender 2009 Virus Scanner identifies a
    Trojan.Generic.1487884 (file reference is US30Kbd2K.sys) in
    C:\Windows\System32\Drivers and deletes same. Also, when running
    WINDOWS Defender on its own, BIT Defender again pops up and also deletes
    file US30Kbd2K.sys.

    My keyboard drivers are listed in Devise Manager as i8042prt.sys,
    kbdclass.sys and US30Kbd2K.sys - the latter is possibly a trojan. However,
    when US30Kbd2K.sys is removed (either manually or by Bit Defender) the
    keyboard and touch pad will not work. I tried uninstalling and and
    reinstalling the two legitimate Microsoft keyboard drivers, but received a
    message saying I could not do so as the Registry was corrupt.

    Can you suggest please how I might overcome this problem. I have curently
    removed KB890830 (March 2009) from my system to keep the keyboard and touch
    pad working. An external PS2 keyboard does not work, but the on-screen
    (manual access) keyboard does.
    Sombrero, Mar 13, 2009
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  2. cf.

    When (date & time) did the MSRT download?

    Did the MSRT alert you to an infection it found?

    When did you install BitDefender? Have you purchased BitDefender? Can you
    manually update BitDefender and have you done so? What anti-virus
    application were you using before you installed BitDefender?

    Has a Norton or McAfee application ever been installed on this machine
    (e.g., a free-trial version that came preinstalled when you bought it)?
    PA Bear [MS MVP], Mar 13, 2009
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  3. Sombrero

    Sombrero Guest

    Hi Bear -thanks for the reply
    First up, no I have never had McAfee or Norton installed on my laptop.
    Bit Defender Anti Virus 2009 is a licensed and fully updated copy, recently
    installed as an upgrade from 2008.
    MSRT was downloaded 13 March - not sure of time -but has been deleted and
    reinstalled by me (using System Restore) a t least three times since.

    However, I now have a clearer situation update about the problem. It now
    seems certain that I have a trojan installed in my machine, which Bit
    Defender identifies as "Trojan.Generic 1487884", in the form of file
    US30Kbd2K.sys, which is located in
    Windows/System32/Drivers and is loading as a PS2 keyboard driver. There
    appear to be at least three Registry entries in HKLM\System\Current Control
    Set\Services that are associated with this trojan. I understand that
    was originally part of a program called Universal Shield,which was installed
    and removed from my machine about a year ago (not Vista compatible), but I
    suspect this version may have come from a P2P source only last week.

    US30Kbd2K.sys is showing up in Device Manager under the Standard PS2
    Keyboard entry as an additional driver to the two regular microsoft drivers
    (i8042prt.sys and kbdclass.sys).

    Both Bit Defender and MSRT KB890830 are recognising and deleting the
    file US30Kbd2K.sys as a trojan - but they are not deleting/modifying the
    registry entries. So when I reboot Vista, I loose both my Keyboard and my
    (PS2) TouchPad facilities. An external keyboard will not work either. Device
    Manager then shows that the drivers (both Keyboard and PS2 mouse) cannot load
    (Keyboard error code 39, Mouse error code 10). I tried uninstaling and
    reinstalling the normal drivers but Vista says the registry may be corrupt
    (Catch 22!!). My USB mouse is working OK

    So the only way that I can keep my laptop working properly (at the moment) is
    to stop Bit Defender from deleting the trojan during its overnight scan, and
    not download MSRT KB890830 (although I might try the latter after
    temporarily renaming the trojan file?). I have used Windows System Restore
    several times to revert back to a useable version of Vista so that I can keep

    Can you offer any suggestions please?
    Sombrero, Mar 14, 2009
  4. [Let me note that your problem really has nothing to do with Windows Update
    other than the fact that AU gave you this month's version of the MSRT once.
    As the thread's really OT for Windows Update newsgroup, I'm going to
    crosspost to Vista Security newsgroup, too.]

    You paid for BitDefender support with your subscription: What have they had
    to say about all this?
    Have you tried to delete them manually?
    As you participate in P2P file sharing, there's a very good chance are that
    you are seeing the affects of other hijackware (e.g., a rootkit that's
    "protecting" the infection you know about and others). If only to rule out
    this possibility, I'd recommend that you run a thorough check for
    hijackware, including posting the requested logs in an appropriate forum.

    Checking for/Help with Hijackware

    **Seek expert assistance in,,, or other appropriate forums.**

    If the procedures look too complex - and there is no shame in admitting this
    isn't your cup of tea - take the machine to a local, reputable and
    independent (i.e., not BigBoxStoreUSA) computer repair shop.
    PA Bear [MS MVP], Mar 14, 2009
  5. Sombrero

    Sombrero Guest

    All OK PA Bear
    Sorry about the incorrect thread, however this matter arose from a Windows
    Update - I just didn't realise at the time that MSRT was simply doing its job
    by deleting a trojan!! The aftermath being that my keyboard and Touchpad
    wouldn't work. And yes,I did email Bit Defender, but I'm still waiting for a

    However, I believe that I have just this minute fixed the problem. I found
    an article on the internet about a similar problem, so fromthat I managed to
    find where the trojan had "edited" my registry to load itself as an extra
    keyboard driver. I edited out the (two) Registry changes, deleted the
    US30Kbs2K.sys driver file, uninstalled the keyboard and mouse drivers in
    Device Manager, then rebooted the laptop and everything seems to be back to
    normal again. Sounds simple now, but working out exactly what the problem was
    took me some time and effort, as well as two visits to the local laptop
    Doctor (which here in Thailand is an adventure in itself, given the language
    Thanks anyway for your assistance and advice. And yes, I am well aware of
    the perils of accessing P2P sites but even being careful, I was still caught
    sombrero, Phuket, Thailand

    Sombrero, Mar 14, 2009
  6. YW & thanks for your feedback.

    Risks & Benefits of P2P File Sharing

    Also see
    PA Bear [MS MVP], Mar 14, 2009
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