I have an HP Pavilion Laptop, an there is a volume control that you can touch it to change the volume. Except when you touch it, it makes the MOST ANNNNOOOYYYING beep ever, and at one point i changed it, and some how changed back. But now i don’t know how to change it back.

I have a Toshiba Satellite with a broken volume control wheel on the front of the laptop. The wheel seams to have come off its hinge. The problem being that when it came off, the volume setting was set to off, so I have no volume on my laptop anymore.
Originally a vista, but changed it to win XP,
Any way, I have tried master volume, plugging in stereos, head phones, and no luck.
What else is there to do? OR How do I fix it?

I have a gateway laptop model number MX6128 and it is not letting me connect to internet. When I try it tells me that the radio is disabled, that I need to enable the radio control switch. I have looked all over for this and even searched the computer help and support but can not find any thing. This is driving me insane. Can anyone tell me how to fix this problem?