Sony — hanging & net connectivity problem

Address:

Dehradun, Uttarakhand

I BOUGHT A NEW LAPTOP JUST TWO DAYS BEFORE DIWALI IN 2011, IMMEDIATELY AFTER 3 DAYS I NOTICED THAT ITS CD-ROM WAS NOT WORKING WHICH WAS DULY CHANGED BY THE COMPANY BUT SINCE LAST 2 MONTHS I AM FACING HANGING & NET CONNECTIVITY PROBLEM FOR WHICH THE SERVICE CENTER HAS TWICE FORMATTED MY LAPPY BUT THE PROBLEM STILL REMAINS THE SAME. NOW THE SERVICE CENTER IS AGAIN SAYING FOR FORMATTING THE LAPPY BUT NOT SURE THAT THE PROBLEM WILL BW CURED OR NOT. UNABLE TO UNDERSTAND WHAT TO DO & TILL WHEN I WILL HAVE TO CARRY MY LAPPY TO THE SERVICE CENTER AGAIN & AGAIN.