Hell my name is lydia please can you tell me how to reboot my e machine netbook

[Guest]

Hello,
please vcan you tell me how i can reboot my netbook its an e machine it saying on the screen NO BOOTABLE DEVICE INSERT BOOT DISC I WILL APPRECIATE YOUR HELP THANKYOU

 

[rene13cross]

Has an Operating System (like Windows) been installed on the netbook?