I have core 2 duo E7500 2.93ghz on asus G41T MLX board. Recently i got overvoltage warning in bios. When i checked it showed vcore as 1.7v+ . Temp readings on both bios and hw monitor was 50c idle. During prime tests cpu temperature shoots from 50c to 99c in 20 sec and remains at 99c. There is no option to decrease vcore in bios. Only positive increments are there. What might be the possible issues.??