Deleted start up disk

[Riggsa4279]

Accidently deleted my start up disk (Macintosh HD), using disk utility, while i was trying to reset the computer to factory settings. Now it wont let me install the mac sierra to the os hard drive. What do i do? Its a 2015 macbook pro

 

[ssmed]

Accidently deleted my start up disk (Macintosh HD), using disk utility, while i was trying to reset the computer to factory settings. Now it wont let me install the mac sierra to the os hard drive. What do i do? Its a 2015 macbook pro

Look up internet recovery and start from there.
https://support.apple.com/en-us/HT201314