Re: ? about audio driver problem and formatting drive
If you are going to format and reinstall you need a windows disc. There is software you can get to extract the OEM number from your windows installation then you can borrow someone else's windows (I'm assuming XP) disc and install it using your OEM number.
Drivers don't just uninstall themselves. The bose speakers you had, were they digital speakers? Maybe the drivers for the analog connector were never installed to begin with?
When all else fails...Ham Radio!
I still have the same old HP DV9700T laptop I've had for years...still kickin'