sound problem

Hi, Can you help?
I have a HP computer running XP but the sound is distorted. It sounds like it is taking place in a bathroom so echo is present. I've tried all the sliders etc. but no joy. The problem is still there using headphones.
Is it a sound card problem or drivers (whatever they may be) or what else?
Any help greatly appreciated.
Cheers

It would be worth at least a try to reload the audio drivers.

If you do not have the HP driver CD then locate your exact model at HP online:

http://welcome.hp.com/country/us/en/support.html

Many thanks will try