Lenovo — About the service centre

Address:

Khordha, Odisha, 751001

I have given my laptop z50-70 for service before 2 weeks as my laptop is showing wrong specifications which are not same when I bought this laptop
and its wasn't detecting the nvidia graphic driver and was only detecting the "Intel Graphic Driver." .They said that my laptops mother board is changed it was not mine. But I only gave my laptop to service the secound time to the same Service centre .

Even after two weeks they are saying that They are getting the wrong mother board for the laptop for which they are ordering..?? and saying that mail conversation is going on...From two weeks..!!!

My laptop is in warrenty and they are saying it may long time.. I am Btech student I have my exams within a week and i will be needing my laptop more.
so I took it back and then Now in my laptop not even "Intel HD graphics" is also not deteecting.!!!

I though they will make my laptop condition better.But they made my condition Worse...!!!

And y they are getting the wrong mother board... is it fault of the company? or their excuse to cover up ?

I feeling like y did I even Buy this lenovo laptop..
Plz resolve this mother board issue I am going to give it to the service center again tommorow...

This service centre is Shahid nagar bubaneshwar...