CALL @9660197100 - For Any Damage / Technical Issue 1 Year Zebronics Onsite KeyBoard Mouse Warranty only. If any Product doesn't work then there are few compulsory steps to follow the troubleshoot before Return - 1) Update your latest driver by downloading from Authorised Zebronics Website Link - https://zebronics.com/pages/drivers 2) Check your Earthing in your house or apartment, It Sometimes happens that Earthing created issues which occurs product doesn't work 3) Use in anyother Laptop, Desktop for re-checking 4) Connect Zebronics Authorised Service Centers, Locate from here - https://zebronics.com/pages/service-centres 5) Replacement will only occur by Zebronics Service Center. Replacement or Return won't be accepted untill Zebronics Authorised Service Center provides written note to not accepted by them. 6) Still any query, Call Mophonics Customer Care Number on 9660197100