Microsoft is changing your Windows Update. The company is killing Secure Boot certificates on most PCs after 15 years, pushing out an update with a critical “Red” warning where “action is needed." But ...

Here's how often you really should be powering down your machine.

Turning a computer off or putting it to sleep may be a matter of personal preference or habit. It's faster to close a laptop's lid or have a desktop enter sleep than shutting down either type of PC.