Help! Command Prompt box flashing like a strobe light on my screen

Discussion in 'Windows Vista General Discussion' started by Bookworm0383, Mar 10, 2008.

  1. Bookworm0383

    Bookworm0383 Guest

    Please help. The little black Command Prompt box is flashing on my screen
    very quickly. There's also something flashing in the taskbar. Sometimes I can
    open a window on top of the flashing, but other times I can't, and the
    flashing window is on top. This prevents me from accessing the window I'm
    trying to work in. I don't know what caused this to happen. I first noticed
    it a couple of nights ago when I was trying to uninstall a toolbar I had
    accidentally downloaded with some other software. The flashing began when I
    tried to uninstall and nearly prevented me from completing the uninstall.
    This makes me wonder if it's a virus, but my Nortan Security scan says I'm
    all clear. I would greatly appreciate any assistance. :)
    Bookworm0383, Mar 10, 2008
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  2. Open the Start/.../system tools/"Internet Explorer(No Add ons)" icon. If the
    flashing stops, use IE, tools menu "Manage Add-ons" to disable add ons till
    it stops in the regular IE.

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    Mark L. Ferguson

    Mark L. Ferguson, Mar 10, 2008
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  3. Bookworm0383

    Bookworm0383 Guest

    Opening the Internet Explorer (No Add ons) icon didn't stop the flashing. The
    icon says my add-ons are disabled. When I go to IE Tools, Manage Add-ons,
    they are all listed as enabled. I'm afraid I'm still very confused. Do you
    think the flashing Command Prompt box is caused by something within Internet
    Explorer? It flashes whether or not I'm online or using IE.
    Bookworm0383, Mar 10, 2008
  4. Mark L. Ferguson, Mar 10, 2008
  5. Bookworm0383

    Bookworm0383 Guest

    I tried System Restore twice and it didn't work. I was able to uninstall the
    suspected toolbar after I noticed this problem, and the problem didn't stop.
    I don't know if the problem is related to the toolbar or not, but that's when
    I first noticed it. However, the persistence of the problem even after the
    toolbar is removed makes me think it might be coincidence.
    Bookworm0383, Mar 10, 2008
  6. Bookworm0383

    Jercro Guest

    I found the answer to this problem by contacting HP.
    It is caused by corrupt USB Composite Device driver
    To resolve
    1. Open Device Manager. ie. Start>Run>devmgmt.msc >Enter Or clic
    Properties on My Computer Context menu. Open Device Manager
    2. Click on the + on Universal Serial Bus Controllers to expan
    3. Uninstall USB Composite Devic
    4. There may be 2 or more of them listed. Uninstall all befor
    5. Restart Computer

    Worked for me. Hope this helps other
    Jercro, Nov 20, 2008
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