Bad Direct Sound Driver

[ouzopower]

Good morning Ladies & Gentlemen.
Two weeks ago i built my new PC (first time).
Every thing was fine until 2 days ago. Suddenly no sound comes out unless system sounds.
I get some messages like:

1. "Bad Driver Sound Driver. Please install proper drivers or select another device in configuration. Error Code:88780078".
I re-installed the audio drivers but nothing changed.

2. "Error while opening sound device. Please check the output device settings and the project sample rate".

3. "There are no active mixer devices available. To install mixer devices, go to Control Panel click Printers and Other
Hardware and click Add Hardware".


Can you please help me out?

 

[chunkymonster]

It is a good idea to list your specs and hardware when asking for help.

Are you using a dedicated sound card or onboard audio?

What did you do 2 days ago that may have changed? Install any applications? Install any new hardware?

Did you load the latest mobo chipset drivers? Did you install the audio drivers downloaded from the manufacturers website or from the disk that came with the sound card/motherboard?

 

[ouzopower]

It is a good idea to list your specs and hardware when asking for help.

Are you using a dedicated sound card or onboard audio?

What did you do 2 days ago that may have changed? Install any applications? Install any new hardware?

Did you load the latest mobo chipset drivers? Did you install the audio drivers downloaded from the manufacturers website or from the disk that came with the sound card/motherboard?

First of all i want to thank you.
If i understand well you want to know about my pc.

GIGABYTE GA-M720-US3,
Phenom II X2 545,
KINGSTON KHX8500AD2/2G HYPERX 2GB DDR2 PC8500 1066MHZ,
Sapphire Hybrid ATI RADEON X700 PRO 256mb
Windows XP SP3

I have installed the latest chipset drivers and the audio drivers from the disc that came with the mobo

 

[ouzopower]

It is a good idea to list your specs and hardware when asking for help.

Are you using a dedicated sound card or onboard audio?

What did you do 2 days ago that may have changed? Install any applications? Install any new hardware?

Did you load the latest mobo chipset drivers? Did you install the audio drivers downloaded from the manufacturers website or from the disk that came with the sound card/motherboard?

No new hardware added. Applications maybe...
Forgot to mention i 've got two kids, 12 and 15, so...