Go to Control Panel>Sound, right-click your desired output method and click 'Set as default'.
If that alone doesn't work, right-click on the default output, click 'Properties', click the 'Advanced' tab, and play around with different Default Format settings (bit depth and sample rate) until something works.
Good luck!
Walker
Windows Outreach Team
My Computer
At a glance
Windows 7 Home Premium (64-bit) *** Windows X...AMD Athlon Neo X2 1.6GHz *** Intel Core i7 Qu...4.00 GB *** 4.00 GBATI Radeon HD 3200, 384MB *** ATI Radeon HD 4...
Computer Manufacturer/Model Number
HP Pavilion dm3 (netbook) *** 27" iMac (Dual-Boot)
OS
Windows 7 Home Premium (64-bit) *** Windows XP SP3 (32-bit), OSX 10.6
Did you try my suggestions above, and it still doesn't work? If you fill out your system specs (go to 'User CP' in the topnav links) we might be able to help you a little better.
Cheers,
Walker
Windows Outreach Team
My Computer
At a glance
Windows 7 Home Premium (64-bit) *** Windows X...AMD Athlon Neo X2 1.6GHz *** Intel Core i7 Qu...4.00 GB *** 4.00 GBATI Radeon HD 3200, 384MB *** ATI Radeon HD 4...
Computer Manufacturer/Model Number
HP Pavilion dm3 (netbook) *** 27" iMac (Dual-Boot)
OS
Windows 7 Home Premium (64-bit) *** Windows XP SP3 (32-bit), OSX 10.6