svchost.exe error: "0x77deada7" referenced memory could not be wr

To Whom It May Concern :

I've encountered svchost.exe application error of follows:
'The instruction at "0x77deada7" referenced memory at "0x77deada7". The
memory could not be written and ask me to
Click on OK to terminate the program
Click on CANCEL to debug the program
If I press ok, sometimes my computer freezes, and I have to force turn off.
Sometimes it works but there will be no audio sound on DVD , CD or MSN .
If I neither press ok nor cancel(like right now) I'm able to do
everything(I think)
that I normally do.
' How to solve the matter? Please advice !
Any help will be deeply appreciated. Thank you.

email address :

Best Regards ,
Ken Kang