Window 7 very Easy and fast
we need 2 gb raam
we need 40 Gb hard disk
window install always form Dvd
Load disk in Dvd room
restart the computer
you see the on screen
press any key
you just press the key
window setup will loaded on board after 5 mint you see some options there one option Enter to install
you just click on this option from key board when you click on key board you see the partition on the screen click on C hard disk and format him when format you will see the option on the screen install enter now you just click on it installation start now you just wait and watch if your system very fast window will be install in 15 mints when window install the computer restart
and open the window :)
you see your new window in you PC or Laptop
there no window key just install the window and enjoy
and do not install drivers the driver will be install default