No active mixer devices available

G

Guest

Guest
hi
i am using windows XP.
whenever i go to volume control i get error massege.
"There are no active mixer devices available. To install mixer devices, go to Control Panel, click Printers and Other Hardware, and then click Add Hardware. This program will now close."

till yesterday my laptop was working fine .but now suddenly i got such error.
what should i do now?
Please help me......