|"I have Win7 64bit and Sound Blaster Audigy are the guys from the onboard soundcard."|
The onboard sound is Creative Sound Blaster X-Fi Xtreme Audio , NOT Audigy !!
Do you also have an Audigy PCI audio card installed in a mboard PCI slot?
If so, I need to supply this additional info.
DO NOT install a PCI card in the last PCI slot on the mboard closest to the center of the mboard, unless it is a PCI video card. That slot is forced to share it's IRQ with the the video, and that often causes problems if it is not a video card.
Unplug the computer, or otherwise switch off the AC power to the case, whenever you unplug or plug in any connection or any component inside the computer case.
Remove the Audigy card and find the model number on it - it's printed on the surface of the card, and on the stuck on label - it's either SBxxxx or CTxxxx - tell us what it is.
Also, tell us which country you bought the Audigy card in.
When we have the model number and region, we can tell you where to get the correct sound software.
You can install the sound software for both the onboard sound and a sound card in a slot, but Windows can only use one sound adapter at a time. The sound adapter you installed the sound software for last becomes the default sound device, but you can change the default device when you have installed the sound software for more than one sound adapter.
Make sure you don't have volumes set too low or muted, for things you want to hear or use.
I assume it's the same situation in Windows 7 as it is in Vista
Click once on the speaker icon in your task bar lower right to see or set the master volume.
NOTE the small blue speaker icon below the volume slider.
Clicking on that toggles Mute on/off.
If the the volume is Muted, there is red circle icon there beside the blue speaker icon.
Click on Mixer below the master volume
RIGHT click on the speaker icon in your task bar - choose Open Volume Mixer
You can see or set the master speaker volume and/or the WindowsSounds volume there.
RIGHT click on the speaker icon in your task bar - choose Sounds
Control Panel - Classic View - Sound
The present volume settings for each sound device in Playback or Recording are shown via in a bar graph on the right.
One device in each of Playback and Recording should have a green circle icon with a white checkmark in it - that's the default device.
Usually Speakers and Microphone are the default devices.
To change the volume setting, or to change the default device, click on a device to highlight it, then you will be able to select Set Default or Properties. Sometimes you can also select Configure there.
Under Properties, select Levels to see or set volume level(s)
In my Speakers Properties, when I select Levels, I see Realtek HD Audio output, PC beep, CD Audio, Microphone, Front pink in.
Microphone and front pink in are Muted.
What you see there may be similar but different according to what sound adapter(s) you have, and according to wther you have more than apair of speakers connected or not.
NOTE that Microphone is Muted there by default. It's automatically un-muted when you use a program that can use a Mic, Muted again when you exit it the program.
In my case, front pink in, for a port on the computer case, Mic, is also muted.
Go to Control Panel - Classic View -
Once the sound software has been installed properly, there is probably an icon there where you can set settings for the sound adapter. If you have more than just a pair of speakers, you can often change the use of some of the jacks from default use so it can be used by (a) speaker(s), when you already have speakers plugged into other than the green jack for just a pair of speakers.