No sound after computer is not in use for long time

[ruru]

Hi, this has happened to me once in a while...
when i left my computer for about one hour or more, and when i return, there is no sound from the speaker.. even tho the music is playing. I've checked the volume but it's on. May i know what's the problem.

thank you

 

[SOcRatEs]

Hello! Welcome to TechSpot!

We need alot more info.
Machine hardware specs, windows version etc.
Post back and let us know.
G'Luck