When you place a computer in hibernate or sleep state 3, it is the same as
turning the computer off - as far as the components cooling down. The point
here is the thermal stress on components (expansion/contraction). If a
computer is turned on, and left on, the internals reach a state of
equilibrium. When a computer is allowed to cool off things will contract
(such as solder connections on a mother board). This can, over time, cause a
"loose" solder connection and be a big problem. Notice that I said "can" -
not will!

That being said, the problem is nowhere near as prevalent as it was when I
was repairing T.V.'s in the 60's. Back then, it was THE major problem! I
could spend half an hour on every T.V. over one year old, resoldering
connections on the circuit boards. Today's soldering techniques have pretty
much minimized, if not eliminated, the problem.

--


Regards,

Richard Urban
Microsoft MVP Windows Shell/User

Quote from George Ankner:
If you knew as much as you think you know,
You would realize that you don't know what you thought you knew!

"KingOfHearts" <raoh99@hotmail.com> wrote in message
news:14Odnc3uj_imH-LeRVn-rw@adelphia.com...
>I have heard that you should leave your PC on, that just seems strange to
>me so I don't do it.
> So I always turn it off when I am done, I could turn it on and off 2 - 3
> times a day, but then I was told that all of this "cold"
> booting could damage the computer. What about hibernating or sleeping, is
> this better. Maybe all of this is BS and it doesn't even matter.
> Thanks for any input.
>
> KOH.
>