Casio HK1223 - Manual (Page 34)

Getting Started 1-5
3. Each time the computer is turned on, it performs a Power-On Self
Test (POST), and the operating system such as Windows should
start.
Turning Off
To turn off the computer safely , use the “Shut Down” command of your
operating system.
NOTE: There are other ways you can stop the computer so that you will be back to
where you left off when you next turn on the computer. (See “Stopping the Computer”
in Chapter 2 for information.)
CAUTION: If you have to turn the computer on again immediately after turning it off,
wait for at least five seconds. Turning the computer off and on rapidly can damage it.