Open the Control Panel and select the Power Options icon
When the Power Options Properties window opens
Select the Power Schemes tab

Fig. 1
Use the
to investigate each field and use the most practical options for your PC.
Select the remaining tabs and follow the same procedure.
Standby reduces the power consumption of your computer by cutting power to hardware components you are not using.
Standby can cut power to peripheral devices, your monitor, even your hard drive
Standby maintains power to your computer's memory so you don't lose your work.
Standby does not save your memory or desktop state to disk
Note - A power failure while on Standby can cause you to lose unsaved information.
* * * * *
Hibernate saves an image of all open files and documents on your desktop on
to your disk, turns off your monitor and hard disk, and then it powers down your computer. When you restart your computer, your desktop is restored exactly as you left
it.

Fig. 2
It takes longer to bring your computer out of Hibernate than out of
Standby.
Note - A power failure while on Hibernate will not cause you to lose
information unless the power has been out for several days. A laptop should be
able to last 10 - 12 days.
* * * * *
Restart is often asked for after an update has been
downloaded to your computer. Files would have been updated, temporary storage
used.
Or, your computer may have lost its way and does not respond in the manner you
expect and the computer needs a shot of Gatorade to clean up the mess and start
over.
Restart is your first line of defense when all else
fails to get you back on track.
It's always best to have all applications closed as data can be lost.
* * * * *
Shut Down is exactly what it says. However, there
is still power floating about in your computer and extreme caution should be
used if you should open the case to work on the innards.
Never Shut Down with open applications.
Always
use
followed by Shut
Down.
Shut Down does not turn the power
off on your Monitor