Dell XPS M1330 Laptop. 2GB RAM
INTEL Hi Definition Audio HDMI
SigmaTel High Definition Audio Codec
Vista Home SP1
There is a constant ticking sound whenever the sound is turned on.
I was able to turn it off by putting a headphone into the jacks, and jiggling the headphone jack around.
There is no ticking if the computer is restarted in Safe Mode.
I've removed all audio devices from the Device Manager, and reinstalled the Dell Audio driver. There was no sound at all when we tried to play something in iTunes. When the headphone jack was put in the ticking started again, but without any music.
I don't know if this is a hardware problem that appears when the drivers are active, or a software driver.