I have Qosmio X775 and Windows 7. I use the Matlab soundsc function a lot when I work on some waves sampled at 44KHz (hence big vectors and matrices).
I notice that if I work on Matlab for, say, an hour or so with the sound wave processing and then let the laptop sit for about an hour, when I come back the sound does not work. All of the indicators in the 'control panel/hardware and sounds' show that things are OK. Also, the speaker icon on the lower right hand side shows no problem. This seems to happen a couple of times a week. It did not happen on my old laptop which used XP.
I can solve the problem by rebooting.
Does anyone have a similar problem? If so, is there a way to recover without rebooting?