Hi Yatin,
Follow what @jayeff said (He's a genius). As far as what i can say, I would recommend getting an ifixit kit as i'm 99.5% sure that is uses torx T4/5 on the bottom (I have a lenovo S730 that uses torx T4/5). Hopefully u can get this all fixed as lenovo's are relatively repairable (Compared to the literal 4 macbooks i have at my place). THis is a bit odd as i know that certain pre production models of the XPS 15 had this issue. To date i haven't heard of it on any other laptop.
Hope u get this fixed,
Nck P
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