F1 Visa approved for Fall 2014. But, I need to go to a different university for SPRING 2015. MS Help.

I have my visa approved to one of the CSU universities for FALL 2014.

Due to personal problem, i am unable to attend and the university did not differ admission.
I have an admit from a different CSU university for SPRING 2015 intake.

i got my visa approved on July 10th 2014. My classes will start in Jan 2015 1st week.

So, how should I approach to new university and IS MY EXISTING VISA VALID to join in SPRING 2015 to a diff univ!!?