Asus P5S-MX SE CPU over voltage error

Hi Techyv Experts,
I am posting here my problem with my Asus P5S-MX SE motherboard, whenever I will turn on my computer I received an error "CPU-OVER VOLTAGE ERROR".
When I looked unto my BIOS settings I found some unusual ratings:
Vcore voltage : 1.96V
CPU temp = 90 degrees Celsius
I already replaced my CPU fan twice, but it did not give any help at all, hoping to hear some solution to this problem, thanks a lot guys.
