Failure to load after installing xp service pack2

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From: James (anonymous_at_discussions.microsoft.com)
Date: 08/21/04 

Date: Sat, 21 Aug 2004 10:13:05 -0700

I recently downloaded service pack2. After restarting,
my CPU fails to load Windows and instead I get a blue
screen stating that it cannot locate the winsrv
component. How can I resolve this?