Realtek ALC888S onboard audio, no analog detected

Hello there,
i have a Asus IPIBL-LB motherboard with realtek ALC888S audio onboard, since a few days ago, after i did a clean instalations of windows 7 ultimate 64, the sound board was detected and windows install it, no problems, BUT... i don not hear anything when i went to the Sound properties the default device is Realtek Digital Audio, i have two RCA also, but i only use analog ones, black, green, orange cables from my 5.1 speakers, but now for some reason in the audio properties, the speakers are not detected, and in the Audio Realtek Manager, the right side, only the digital are shown as detected not the analog.

I already thied to install newest drivers available, for like 5 times, and no diference.

Could someone help me?

Open the Sound panel, click the Playback tab and right click anywhere in the box. See if "Show Disabled Devices" and "Show Disconnected Devices" are both checked. If not, click on the boxes to Check Mark. If Speakers show up in the device list, right click then click Set as Default Device.

I forgot that part, the speakers properties do not allow me to click on the option, it's there, but it's not available to make it defaut =(

Click the Orb, right click Computer, select Manage.
In the left pane, click on Device Manager.
In the center pane, click on the diamond to expand Sound, video and game controllers. (or similar)
What's the status of Realtek High Definition Audio? Is there a yellow exclamation?

nop, no yellow exclamation, i tried to removed it and restart and install several drivers, and no luck. Damm

Sounds (pun) like your drivers are not installed. (Correctly or completely.)

Download the Realtek HD Drivers from your PC's OEM site. Look under "Support". While you're there, check to see if there's a BIOS update.