High Definition Audio controller driver refuses to install

hello all

my computer has stopped playing any form of sound from it. Right now in the taskbar, theres a speaker icon with an x through it that says "No Audio Output Device Is Installed". Ive checked device managed and everything is working perfectly except for the 2nd High Definition Audio Controller listed. Theres a yellow exclaimation mark triangle through it that says code 10 (device cannot start), and then i investigated further and it said problems with PnP. Ive tried to reinstall it many times, restarted my laptop over 5 times and virus scanned my laptop over 10 times now. Im running windows 7 64bit.
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More about high definition audio controller driver refuses install
  1. for some reason, whenever i attempt to reinstall it, it just says installation unsucessful
  2. heres the faulty driver, but reinstalling it always fails

    http://imageshack.us/content_round.php?page=done&l=img155/4185/67429036.png&via=mupload&newlp=1

    can someone please help, starting to get very irritated by lack of sound :L
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