Microsoft Windows XP is the sixth release of the NT series of operating systems, and was the first to be marketed in a variety of editions: XP Home and XP Professional, designed for business and power users. The advanced features in XP Professional are generally disabled in Home Edition, but are there and can be activated. There were two 64-bit editions, an embedded edition and a tablet edition.
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ASKER
It didn't occur to me to go to my laptop Manufacturer's support area. I have a Gateway CX200X Tablet PC. I upgraded my driver and the sound seems back to normal. The PC Speaker controls on the main Volume Control window are still grayed out (sorry about the typo in the title). Maybe they're supposed to be since the main Volume Control controls are active? At any rate, you pointed me to the best place to find current drivers for my system, and downloading and installing the update resolved my main problem. So thanks. If you have an answer to the secondary question of whether the PC controls are supposed to be grayed out, I'd be interested in hearing it also, but can also Google the question. It's not that important.
Thanks again,
Linda