As far as surge protection is concerned, any equipment that does not
have a physical line switch turned off, or the power plug unplugged,
is subject to voltage spikes and surges if not adequately protected by
a surge arrester or dual conversion UPS.
Most motherboards today have the NIC built in - and WOL just needs to
be enabled in BIOS. (and the line switch needs to be ON, and the power
plugged in, and the port to WOL opened on the router)
I don't see that, but they do use some power. Hybrid sleep though, allows
the power to be cut.
Of all the power-saving states in Windows, hibernation uses the least amount
of power. On a laptop, use hibernation when you know that you won't use your
laptop for an extended period and won't have an opportunity to charge the
battery during that time.
Hybrid sleep is designed primarily for desktop computers. Hybrid sleep is a
combination of sleep and hibernate-it puts any open documents and programs
in memory and on your hard disk, and then puts your computer into a
low-power state so that you can quickly resume your work. That way, if a
power failure occurs, Windows can restore your work from your hard disk.
When hybrid sleep is turned on, putting your computer into sleep
automatically puts your computer into hybrid sleep. Hybrid sleep is
typically turned on by default on desktop computers.
Where does it say..."you can then turn your power strip off" or "pull
the plug". If it doesn't say...then it's not recommended. It does say,
"That way, if a power failure occurs, Windows can restore your work
from your hard disk".
You are loosing me. I asked where it gave the information about not to
unplug it. You wrote "If it doesn't say...then it's not recommended."
It doesn't tell me to put my monitor on top of a *black* desktop, so I'm
doing wrong by doing that? It doesn't say which way to position the
monitor, does it go toward me or away from me? Damn MS doesn't say, now
I'm in a real bind. Common sense tells me that if you remove all
external wires from the pc that might be hit by lighting, you will be
much safer by making it very much more difficult for a lighting surge to
damage it. Now I'm not saying I do that, but it would be safer that
way. Uh, but that's not true because MS doesn't say it? Take a look at
the subject line.
If you look at the other replies, you're not alone. Many posters said
the same thing, which is the link from MSFT does not say what Bob
claims it does. It says absolutely nothing about recommending not to
turn computers off.
On Sat, 12 Mar 2011 11:23:33 -0800 (PST), " firstname.lastname@example.org"
Also, we seem to be talking about two things, Turn Off (win-key, u, u)
Bob is concentrating on Unplug.
For years I turned off my UPS after I turned off my computer, to save
electricity. (The current UPS can't be turned off with my toes. And
because the cord is short, I practically have to get down on teh
floor.) Turning off the UPS is equivalent to unplugging the computer.
It causes no problem, except that the computer relies on the CMOS
battery to keep track of the time and BIOS settings. If wake-on is
enabled, it stil won't work because the CMOS battery won't power it.
And people unplug their computers, sometimes for a long time, when
they move to another home.
But if Hibernate is used and the UPS or, the Surge Suppressor is
turned off, or the computer itself is unplugged, the previous session
will still start up where the user left off**.
**I've been wondering, If I install more memory while the computer is
in hibernate, will Windows recognize and use the added memory? I know
if you plug in a USB device while in Hibernate, Windows will find it,
as if you plugged it in just after it finished coming out of
Hibernation DOES turn off the computer. By turn off, I mean removes power in
exactly the same way as "powering down" the computer. The power consumption
difference between hibernation and shut-down is zero; they are identical in
Now "powering down," whether by front-panel switch or by Hibernation, does
not remove all power from the computer. The computer's power supply does
maintain a trickle voltage to maintain the internal clock (in case the
battery fails) or, in some cases, wake-on-lan.
You can completely "power-down" the computer by flipping the switch on the
computer's power supply - if it has one - on the back of the case.
My vote for the best answer. Also, even if the power was completely
via switch in the PC, a surge of sufficient voltage could still
arc across some wiring point in the PC.
Also, whether the surge protector is turned on or not has no effect on
protection for surges originating on the AC lines. As long as it's
the MOVs are still there
between the line and PC whether the surge protector is on or not. The
protector uses neglible power, only enough to light the LED indicators.
You bring up another point: MOVs. MOVs are like reverse fuses - they are
normally open until they see a surge, then they short the surge to ground.
Problem is, like fuses, they're only good once (or maybe a few times). Then
they no longer work and the strip passes the surge straight on through.
Surge protection strips that use sophisticated electronics continue to work,
no matter how many surges they encounter.
So how can you tell which you have? If the strip cost in the neighborhood of
five bucks, it's the (almost) worthless MOV kind. If it cost $50.00 or more,
it's probably the electronic kind.
An all-round better solution is a "Whole-House" surge protector. These cost
$50-75 and attach at the circuit breaker box (if your hand fits a
screwdriver, you can install one). Moreover, they have little light(s) to
tell you they are working.
"Whole-House" is definitely not the answer. A UPS with surge
suppression would be a better one.
Any high-current device switching on or off and going through a common
conduit or routed near to the supply circuit of a PC would induce a
surge into that circuit. Making "Whole-House" suppression pointless.
I read somewhere about studies done that showed the best practice was to
cascade surge protection starting where the power enters a structure.
Then at distribution panels to protection at individual pieces of gear.
The power company here offers a unit that plugs into the meter socket
and the meter plugs into the surge protector. Take a look at page 7 of
the pdf from the link below:
The meter socket surge arrester can be installed on any home or office
electrical service. Pull the meter, plug in the unit where the meter
goes then plug the meter into the surge arrester. At the electrical
panel, a new type of surge arrester that plugs into an available two
pole breaker slot is simple to install. You then plug your computer
gear into your UPS or surge arrester power strip. It's all plug in and
easy to do. :-)
I don't really know, the power company in this area handles/leases the
meter socket protection but the plug in surge arresters can be obtained
from the local electrical supplier or ordered online. Of course every
retailer seems to sell power strips and little UPS systems. :-)
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