IIM

There are some key parameters that we should keep in mind before choosing any University, like, faculty, placements, international exposure, curriculum, alumni of that university. MBA is somewhat a higher and reputed degree which will open the door for lucrative jobs in the corporate world. Though the charm of MBA has not decreased, the management institutions are rampant especially in Cities. The point is that pursuing MBA has become easy than it was a decade ago. I would suggest you to choose a university that caters your all round development and provides complete placement and internship assistance. List of some of the Top and best private colleges in India are the following
LNM Institute of Information Technology, Jaipur
Vellore Institute of Technology, Vellore
Manipal Institute of Technology
SRM Institute of Science and Technology, Chennai
Dayanand Sagar college of engineering, Bangalore
Geeta University, Panipat,. .

No, it does not have any affect on your admission for MBA in any IIM college. Although, there are some points that you should be aware of. You would be able to change your university only if your university allows transferring of credits i.e. when you go to another university, your credits from 1st year will be transferred to your new university. You should get a confirmation from both the universities regarding the transfer, and only then you should leave. You should have cleared your 1st year to be eligible to get a admission in 2nd year in another university
NOTE: Not every university allows transferring and allows students directly for 2nd year. You should be all clear about your decisions.