laptop security key

[garstim]

where do i find the network security key for a e-macines e728 laptop

[AlBags]

You don't .. unless you are using a dongle to connect to a wireless network. The key will then be (probably) on a sticker under said network router : )

[ChuckFickens]

Or, if it's not ↑ then you need to check in the admin pages for your router. if you post the make and model of the router someone will tell you how.