Possibly the coolest feature is being able to remotely shut down your computer using Switch Off's mobile-friendly web interface, whether it be from another computer or on your smartphone.

Leaving your computer on can waste money and energy. Use these steps to get Windows and Mac devices to automatically turn off and start up on a schedule.

Q Sometimes a day or two can pass without anyone using our desktop computer. Should we leave it on or turn it off? Do we extend the life of the hard drive when the PC is turned off?

Do you always leave your computer on? Should you turn it off at night? What are the benefits and problems associated with each scenario? We asked the experts.

If you don't need to go online but still want to work on the computer, switch off the wireless connection to conserve battery power.