Next day on 2nd aug'16 i received call from service center and was informed that hard disk is not working properly and it needs to be changed. They informed that new hard disk will cost 4500. I asked them to kindly retrieve my data from original hard disk and place it in new HD of laptop.
On 5 Aug'16 i was informed that mt laptop is repaired.I visited service center to get my laptop. They gave me back my laptop but without retreiving my data and i asked for my old HD. Afetr returning home when i checked the hard disk details it was TOSHIBA MQ01ABD050 ATA DEVICE and when i checked the price it was Rs3500/-