Took out 2 GPUs & ran only one& 4 Monitors for 2 days with no problem. So inserted all 3 GPUs & have been running with no problem till today. CPU is running at around 62 to 64 C. GPUs are running at around 68 C. Neither have gone beyond 70 C. Have not made any changes but for absolutely no reason problem started & went away on its own. Go figure ? Thank you all for your support.