Secure boot is not available on any HP Consumer Desktop or All-in-One computers. Your computer may require additional hardware, software, firmware, and/or a BIOS upgrade to install and run Windows 8. Not all Windows 8 features may be available on all Windows 7 computers. Please read the following important information before beginning your upgrade: You may perform either an Inplace Installation that retains your data and settings from Windows 7, or a Clean Installation (custom) that deletes all data from the hard drive before installing Windows 8. HP Desktop PCs - Upgrading from Windows 7 to Windows 8 This document pertains to HP Desktop and All-in-One computers to be upgraded from Windows 7 using a digital copy of Windows 8.