Windows 7 So, you don't like malware, right?

Secure Boot in Windows 8 prevents malware on systems. But, you are require to use UEFI machines to have Secure Boot.

Microsoft made improvements in Windows 8 with UEFI based machines.

Protecting the pre-OS environment with UEFI - Building Windows 8 - Site Home - MSDN Blogs

Win8Logo (2013_02_06 10_30_24 UTC).jpg

PS: This is one big reason why I was happy to go to a UEFI M/B & Windows 8

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