I reinstalled OS and it still did not fix. Then I noticed it ran a S.M.A.R.T check on the HD and the HD failed.
I had it replaced under warranty through WD as I was using their 640GB drive. After the replacement the overheating is definitely down and the computer is working much faster with no lag.
I had it replaced under warranty through WD as I was using their 640GB drive. After the replacement the overheating is definitely down and the computer is working much faster with no lag.