svchost exe error

[happy692]

Could some-one please provide information on SVCHOST EXE ERROR ON START-UP.

I am running XP MEDIA CENTRE ,SERVICE PACK 2 ON A HP DUAL CORE T5600@1.83GHz with 1024 ram

The computer when going to play music doesn't pick up the on board sound card or keeps dropping out.

Any help on these matters would be greatly appreciated

manybthanks

les