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I haven't done this but you should be able to run the upgrade assistant. &nbsp;That is mostly used for things like windows 7 to windows 8. &nbsp;Other then that you may have to get the ISO/DVD and put it in while the computer is running, then click on upgrade. &nbsp;Just make sure the DVD is the version of windows 8 that you want to use.<br />
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hope that helps
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I haven't done this but you should be able to run the upgrade assistant.  That is mostly used for things like windows 7 to windows 8.  Other then that you may have to get the ISO/DVD and put it in while the computer is running, then click on upgrade.  Just make sure the DVD is the version of windows 8 that you want to use.

hope that helps

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New Lenovo ideapad P400 came with Win 8 loaded. &nbsp;How do I change it to Win 8 pro or Win 8 Enterprise? &nbsp; Do I need to use the Win 8 Enterprise ISO (burned to DVD) and do the install or can I Just change the Product Key to Win 8 enterprise? &nbsp; Does the product key determine the features to turn on? &nbsp;Is the base code for Win 8 the same for all versions? &nbsp;or Do I need to specifically use the Enterprise DVD and do an install or update?<br />
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Also Where does the Lenovo Laptop get the product key from? &nbsp;The install did not ask for a Key. &nbsp;How do I activate? &nbsp;Lenovo does not provide documentation containing Win 8 product key.
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New Lenovo ideapad P400 came with Win 8 loaded.  How do I change it to Win 8 pro or Win 8 Enterprise?   Do I need to use the Win 8 Enterprise ISO (burned to DVD) and do the install or can I Just change the Product Key to Win 8 enterprise?   Does the product key determine the features to turn on?  Is the base code for Win 8 the same for all versions?  or Do I need to specifically use the Enterprise DVD and do an install or update?

Also Where does the Lenovo Laptop get the product key from?  The install did not ask for a Key.  How do I activate?  Lenovo does not provide documentation containing Win 8 product key.

Apply Win 8 enterprise over Win 8

Windows 8 is a personal computer operating system developed by Microsoft as part of the Windows NT family of operating systems, with an emphasis on improving its user experience on tablets. In particular, these changes included a touch-optimized Windows shell based on Microsoft's "Metro" design language, the Start screen, a new platform for developing apps with an emphasis on touchscreen input, integration with online services, support for USB 3.0, Advanced Format hard drives, near field communications, and cloud computing. Additional security features were introduced, such as built-in antivirus software, integration with Microsoft SmartScreen phishing filtering service and support for UEFI Secure Boot on supported devices with UEFI firmware.

Windows 8

The Microsoft Legacy Operating System topic includes legacy versions of Microsoft operating systems prior to Windows 2000: All versions of MS-DOS and other versions developed for specific manufacturers and Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions, and Windows Mobile.

Microsoft Legacy OS

This topic area includes legacy versions of Windows prior to Windows 2000: Windows 3/3.1, Windows 95 and Windows 98, plus any other Windows-related versions including Windows Mobile.