Hi guys please can you help and advise.
I keep having a recurring problem with my audio drivers.
I don't know what's happening as the driver seems to just stop and says there is no peripheral connected but i am using HD tv as monitor via HDMI cable.
when i uninstall the audio driver and reboot... windows re installs driver and all works fine but when i shut down and boot up again the sound driver has gone/stopped working so no audio.
then do the above again and the audio is back??? until i shut down and reboot then its gone again.??
i have done nothing different i think to cause this it just started

running windows 7 ultimate x64 on dell inspiron i5 processor 6gb ram

hope someone can advise me as pulling out my hair