HP Notebook System BIOS Update (Intel Processors) is a Critical update that fixes known issues where the virtualization technology (VT) feature cannot be disabled if the BIOS settings are configured to default. This update also fixes an issue where the HP Notebook operates slower than expected when running multiple programs. Download (SP53368.exe) supersedes version (SP52758.exe) and works with HP Notebook Computers that have an Intel Processor. Operating systems supported are: Microsoft Windows 7 Enterprise 32 Edition Microsoft Windows 7 Home Basic 32 Edition Microsoft Windows 7 Home Premium 32 Edition Microsoft Windows 7 Professional 32 Edition Microsoft Windows 7 Starter 32 Edition Microsoft Windows 7 Ultimate 32 Edition Microsoft Windows 7 Enterprise 64 Edition Microsoft Windows 7 Home Basic 64 Edition Microsoft Windows 7 Home Premium 64 Edition Microsoft Windows 7 Professional 64 Edition Microsoft Windows 7 Ultimate 64 Edition Microsoft Windows XP Home Edition and Microsoft Windows XP Professional