NEED HELP!!!! PROCESSOR DIEING!!!

hi,i m having a problem with my processor,and mine you ive never had this
problem before so..where do i start.....well every time im loading up a
windows eg..bringing up WMP or anyother programs thats includeimg windows it
says on the top of the window i open (NOT RESPONDING) so i look up in my
event log under programs and found afew errors with some boot up programs
but nothing that i was looking for how ever,i then looked in problems
reports & solutions and found thats some programs were cousing the processor
to work over time! but the funny part was the same programs have been in
there when ive never had a problem...so im thinking my prossecer is kaput!!
how ever ild like some advice on this subject cos im only new to theses
computers.
( WHAT IM RUNNING)
OS vista premium
RAM 1GB
VIDEO CARD nvidia Ge force 7300 GT
PROCESSOR AMD sempron (tm) 3300+