How to turn on the wifi on gateway nv53 laptop

If it's a recent model it may have either a physical switch (usually on case edge, side or front) or via an Fn key combination (sometimes one of the Fn keys has a little antenna symbol).

Otherwise read the manual -- older models tended to leave wireless on by default but it could be switched off in Windows.
 
What I did for the gateway laptop- go to Control Panel. Device and Printers. Device manager. Network adapters. ×whatevername×wireless network adapter. Advanced. AdHoc 11n. Then under Value I clicked enable.