computer keeps chutting down

i am wondering if u can help me. my computer keeps
chutting its self down it says that the (RCP) has
terminated unexpectedly and i havent got a clue what is
happening to it. i phoned up blueyonder and they said
there was something on the web that i could download to
fix it but i cant find it. if by any chance u know what i
am going on about could u please help me as i need to have
my computer up and running

yours faithfully

Miss T. Turner