If the system was purchased with the standard warranty (12 months, return to depot), that warranty is valid only in the country of purchase.  International transfer required: 1. That you are the registered owner of the system, 2.  That the system have an onsite service plan purchased from Dell (extra cost at purchase) 3.  That the system configuration is sold in the new location. You can try to retroactively purchase a warranty upgrade, but it may or may not cover the existing issue.  If it's on record, they may consider it a pre-existing condition.  
I purchased a Dell Inspiron 14 2-in-1 from the USA 4 months back (means it is in warranty period). I started facing issue with touchscreen which is not responding to my touch. On reaching out to Dell care they wanted me to pay for the screen replacement despite the product being sold by Dell in India?
USA purchased, warranty not accepted in India