Hi, I have ordered a new laptop, a Lenovo IdeaPad Z50-70. It doesn't came with windows pre-installed, so i also bought a copy. This might seem stupid but i am new to this. From what i saw in an unboxing video, the laptop comes with a driver cd. Do I install the drivers after or before installing windows? Also, what do i find on the driver CD, a single program with one easy installation , or do i have to choose what things to install ? Thank you.