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Hibernation is another state that is available on Windows PCs.

It is better to shutdown your computer when traveling between networks, or restart when you arrive at a location with a different wireless network. Wireless network connections sometimes do not refresh when you move from one network to another in sleep mode.It is best to simply shut down your computer if you are not going to be using it for 12 or more hours. Your computer needs to be restarted periodically to be refreshed and to perform some routine maintenance.If the battery was drained, you must plug in the laptop before it will wake. If you do this, your computer may power down while sleeping and will require that you press the power button to wake it. Laptops still use some power when sleeping, so you don't want to put it to sleep if your battery charge is low, especially if you won't be plugging it in soon.There are, however, some times when it is better to simply shut off the computer, rather than putting it to sleep or standby. By all means, put your laptop to sleep as you travel from building to building on campus. Sleep is a handy way to safely move a laptop computer from point A to point B, as it turns off the hard drive this prevents potential damage to files. But, how do you know what state to leave it in when you know you won't be using the computer for a while? Sleep (Mac) or Standby (PC) Even desktop computers are programmed to blank the monitor, and spin down the hard drive and the cpu during periods of inactivity. Modern computers are equipped with several features that conserve power. In this tech tip, you'll learn when to put your computer or laptop to sleep, and when it's better to shut down. National Sleep Foundation: "Allergy-Proof Your Bedroom," "Compare Different Sleep Aids," "Healthy Sleep Tips," "How Alcohol Affects the Quality – and Quantity – of Sleep," "How to Talk to Your Doctor About Your Sleep," "How to Prevent Neck Pain While Sleeping," "Napping," "Sleep Hygiene," "Sleeping with Pets: Is It Healthy?" "Tips for Sleeping During the Day.To Sleep or Not to Sleep.and Other Power States Explained.Molecular Vision: "Effects of Blue Light on the Circadian System and Eye Physiology.".European Spine Journal: "Prevalence of Sleep Disturbance in Patients with Low Back Pain.".Experimental Neurology: "Watching the Clock and Hitting the Snooze Button: Introduction to the Special Issue on Circadian Rhythms and Sleep in Neurological Disorders.".Davies and Starr / Digital Vision and Thinkstock.