Reinstall using Retail leopard discs, MacBook Pro will not detect speakers

Hi, I just purchased a MacBook pro used, and the owner lost the original discs. He sold it to me with a formated (no OS) on the HDD, because I have upgraded my older mac with leopard I decided I would reinstall with that. The MacBook Pro is the very last model before the unibody (penryn 2.4/256mb video). Upon installation the greeting video played with no sound, and pressing the volume up key (shared with F12) did nothing, and once to the desktop, hitting that button resulted in dashboard launching (like the old style keyboards would).
Now I cannot seem to raise the volume, or use ANY of the function keys, I also cannot set the trackpad to use gestures. It would pretty much seem my MacBook Pro is missing its drivers for its internal speakers (they're not listed in the sound prefpane), trackpad, and keyboard. HELP!
Message was edited by: Kardon
Well this is mildly embarrassing but it IS valuble to others in my situation!
*OKAY SOLVED* (must be a record I posted the question a minute ago).
I forgot to mention I also couldn't adjust brightness, but after running the software update, it seems all of the proper drivers have been download and installed because I now have full proper function of the MacBook Pro. Thanks for the wasted space, but again, this could be useful for others. If this is happening to you, just run the Software Update tool (under the apple logo in the top left) and let it finish its 800mb update, all will be solved.
Message was edited by: Kardon
Message was edited by: Kardon

I had the same problem, except mine happened after restoring from a Time Machine backup onto my new unibody MacBook. Thanks to the OP.

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Message was edited by: BradleyMG
Message was edited by: BradleyMG

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Reinstall using Retail leopard discs, MacBook Pro will not detect speakers

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