I have Dell Optiplex 745 with Windows 7 installed on it. I'm trying to use the Windows XP audio driver as Windows 7 drivers aren't available for Optiplex 745 and Windows Vista driver is displaying that it's not compatible with my hardware.

When I try to install the Windows XP audio driver, it's displaying an error

HDA audio bus driver is required and not found

The installation fails then.

I have researched thourghly and used many drivers but my audio is not working at all. I was also told that it might be a problem with my hardware – that is, a problem with the board.


You might want to try the Windows Vista Drivers for your sound card instead:

Tom's Hardware forums proscribe a solution

  • Thanks for you support but as I mentioned in my question when I try to install windows vista driver, it displays a message that this driver is compatible with your hardware. Also please be noted that windows xp driver was working really nice for some time but after a few days of my windows 7 installation, it stop working and now all this happening as I mentioned in my question. Oct 7 '12 at 4:32
  • You may wish to verify that, if your OS is 64-bit, that the 64-bit driver is the one you're using. If your OS is 32-bit, you will require the 32-bit driver.
    – Ben West
    Oct 8 '12 at 16:09
  • en.community.dell.com/support-forums/desktop/f/3513/p/19322012/… May also be helpful. HAve you read the full post and replies in my article; there are several alternative processes posted.
    – Ben West
    Oct 8 '12 at 16:14
  • My OS is 32-bit and I have also read this post but my problem still remained unresolved. Oct 8 '12 at 17:09
  • 1
    Did you try running the driver installer in compatibility mode? Also, why not use Windows' built-in HiDef audio driver?
    – Bigbio2002
    Dec 27 '12 at 23:43
  1. reboot
  2. go into the Dell BIOS (should be the F2 key)
  3. make sure that the integrated audio is enabled

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