Is your HP MediaSmart server reporting a false overheat like mine? It seems that HP engineers are recommending that you run a system restore to fix this issue, which is a joke.
My advice… take it or leave it.
If your processor heat is not reporting silly temperatures, and the system is the only high temperature… check the box to ignore the warning until HP pull there finger out and release a patch for this obvious HP bug.
HP have released this temporary fix (unsupported etc) which disables the sensor giving the error on your WHS, but it is not a full solution obviously.