my laptop somehardware problem last 2 &half month I also Camplan loging last 2 month in LENOVO (my laptop brand is lenovo) they are timeing 2days 2 days gone 2month not sol my problem same problem befor 1 Year

I bought Lenovo laptop 19 months before. My laptop has 3 year warranty.
..i m suffering from a hardware problem that my DVD-ROM is not working properly.&bodypart issu.i registered the complaint to the Lenovo service center before 2 months but they no proper refused to do so as they are saying that part not avelebel in lenovo . i have visited 3 times to the service center 5 times before for the replacement of some other parts &same part before and got replaced but this time they are refusing to do so.....i surely can say that i haven't replaced the part....it might be the service center who replaced it or may be that i got a defective piece from the company....help me in sorting out the problem please....