Choice: Leave it running
Every time you power up a computer, it's like giving the device a minor
heart attack. Electricity surges through delicate circuits, flash-heating
them and causing expansion. Immobile hard drives quickly spin up
from a stop to speeds exceeding thousands of rotations a minute.
Rebooting several times a day is a good way to wear out your
machine fast and considering the nasty,Eco-unfriendly process
required to make a new PC, the green thing to do is to keep the one
you have as long as possible. Besides, in stand-by mode, modern
PCs don't consume much power anyway. Please Ditch that
old tube monitor for an energy-efficient LCD model.