How to boot my dell laptop

[ammusurendhar]

Hello,
i want to boot my dell laptop to change my windows 8 os.but i cant do it.......... please help me

 

[hedwar2011]

What are you wanting to boot it to?

Are you wanting to install a different version of Windows on the computer other than Windows 8? If so, you will need to purchase a legal copy of Windows 7 first.

 

[hytecgowthaman]

Want to install windows 7 ,U need windows 7 bootable disc (genius key for activation), load default setting in bios , insert dvd ,restart ,automatically boot from dvd ,press any key to boot from dvd.