Sound Card issue, not detected

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http://forums.fedoraforum.org – I have a problem with my sound card that is not detected. Until today it was detected, but now it suddenly dissapeared. i can detect it usind the lswh command but in my bottom left icon it shows Dummy Output. lshw: Code: *-multimedia           description: Audio device           product: VT1708/A [Azalia HDAC] (VIA High Definition Audio Controller)           vendor: VIA Technologies, Inc.           physical id: 1           bus info: pci@0000:80:01.0           version: 10           width: 64 bits           clock: 33MHz           capabilities: pm msi pciexpress bus_master cap_list           configuration: driver=HDA Intel latency=0           resources: irq:17 memory:fbffc000-fbffffff I have alsa intalled, i mentioned that it worked 2 days ago and now it stopped functioning. how can i fix this ? :confused: (HowTos)