PCH-A110 Crash with Speaker Noise

[mahan]

Every now and again, and increasingly often, my A-110 will crash and the speakers make a sound as though the hard drive is spinning down.

This happens either when playing music or sometimes when the PCH is left on the home screen and not doing anything. I have not had this problem playing movies.

The fact that it is a noise being generated through my speakers suggests that it is not a hard drive (I have an internal hard drive in the PCH) problem but a problem with the motherboard or the software and that it is one of these which is causing the crash.

I have to switch the power switch on and off again to reboot the PCH.

Has anyone else experienced this and if so has anyone managed to find a cause and/or solution?

Any suggestions greatly welcome.

Many thanks in advance for your help.