Iphone 5S not restarting
Hi,
My iphone 5s is not restarting. when I charge, it doesn't show charge signal also. Last month I tried charging with third party charger. for 10-15 days I was able to charge but next day when I got up and tried charging, nothing comes up.... after a week I tried with IOS genuine charge but no luck. I tried all the ways of pressing wake/sleep + home button but nothing works. I tried connecting to laptop but it doesn't recognize my iphone. I am not able to do anything now. Please suggest how can I restart my Iphone.
iPhone 5s, iOS 8.4.1