Systems may require upgraded and/or separately purchased hardware to take full advantage of Windows 7 functionality. Not all features are available in all editions of Windows 7.
*Not all Windows 8 features may be available on all Windows 7 PCs. Your system may require additional hardware, software, firmware, and/or a BIOS upgrade to install and run Windows 8. For complete upgrade details, see www.windowsupgradeoffer.com/en-US
Check these sites frequently, as some details may change and/or additional information may become available.