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A copy of the report will be saved to the desktop. * To determine if your current Windows version can be upgraded, go to http://www.lenovo.com/windows7. Clean install If your current version of Windows can't be upgraded or if you want to replace your current operating system entirely, you can perform a clean install.
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Windows 7. To start from the upgrade disc, restart your computer. When the Lenovo logo comes up, immediately press F12 (or Fn+F11, if there is no separate F12 key on your keyboard) to open the boot selection menu. Choose the optical drive as the first boot device.
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Type in the 25-character product key in the following window to activate the new operating system.