Me personally annoying only Windows 8.1
I thought to myself, I have to move with the times and move from Windows 7 to 8.1 times ... Had the hope that it might not be as bad as all always say. Well, unfortunately it is yet. Microsoft has managed to abolish really useful functions. To open an application now takes at least twice as long as you have struggled through the structure. When I have time, and should it rain on Sunday times I might Switch back to Windows 7! Rather than to create something truly new creative have the Microsoft Windows 7 trolls brutally raped and as long sadistic mind playing around to a colorful crippled little remained that they have christened Windows 8 ... Since an emergency surgery, it is now called Windows 8.1. .. Now it is at least viable.
Here is a brief guide to installation of the people afraid of:
legal download of Windows including the necessary tool to create the boot USB sticks.:
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Create and burn a DVD and Download a bootable USB stick. The Key can be purchased later, if not already present.
(Turn on laptop and an F-key F2 F8 or F10) BIOS calls now I do not know which, by simple try quickly and then select the BIOS that first to boot from a USB stick. Insert Save, USB flash drive and reboot. Then you are already in the Start menu. IMPORTANT: If Windows during installation restarts first disconnect the USB flash drive, otherwise the installation starts all over again (boot order).
Then install all the drivers, are indeed on the DVD.
Well, that's it.
This could perhaps be a bit more complicated when you install Windows 7. I'm not sure if the accompanying driver can be used on the DVD for Windows 7. But on the Lenovo page there should be anything to download!