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I have been just closing the screen and I found that very convenient, but, is it better to turn off each night? Does this make any difference how long the laptop will last?

Zeynel
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    Most laptops go to sleep or hibernate when the lid is closed. Or the inactive keyboard and touchpad would cause a PC to sleep or hibernate. Have you disabled all of these power saving features? – sawdust Jan 03 '12 at 01:29
  • No. I did not disable anything. I just checked and it says "sleep" when close lid on both battery and plugged in. So, is it ok to not to turn off for long stretch of time? – Zeynel Jan 03 '12 at 01:49
  • Related: [Maximum reliable duration to leave laptop open?](http://superuser.com/q/157584/13567) – Mehper C. Palavuzlar Jan 03 '12 at 07:35
  • If you are going to leave your machine on for extended periods, you might as well find something useful for it to do. There are a number of distributed computing projects that can make use of otherwise unused computer time; you might start [here](http://www.mersenne.org/) – Brian Hooper Jan 03 '12 at 09:55
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    Why, oh why does this have 3 close votes as "not constructive"? I find this an interesting (and relevant question). To all the close voters: It would be helpful to at least leave a comment why this is considered not constructive. – sleske Jan 03 '12 at 10:14
  • @sleske: This is mainly because it is highly subjective, as deemed by the close voters. [Read more here](http://blog.stackoverflow.com/2010/09/good-subjective-bad-subjective/). – Tamara Wijsman Jan 03 '12 at 17:41
  • @TomWijsman: Thanks for your reply, but that still does not tell me why the closers felt the rules for "bad subjective" apply here. Anyway, I suppose I should take it to meta. if I really feel strongly about it. I'll think about it... – sleske Jan 04 '12 at 08:04

3 Answers3

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For the most part I would say no, it does not matter, as long as you have it on a hard surface where proper cooling can be achieved.

In my personal experience the hard drive of a laptop is typically the part most likely to fail, and after that the motherboard itself (usually due to a fried on board GPU). Almost all laptop failures I see are due to heat (leaving laptop on a bed, carpet, or other soft surface that does not permit good air flow). I used a laptop as a server for a while and didn't turn it off or even restart it for a year and eight months! That was several years ago and that laptop is still going strong (it was new in 2003). Most all solid state devices are pretty tough, as long as they are not abused (AKA improper cooling). And for the non-solid state part (your spinning hard drive) studies have shown (most notabley Google's massive hard drive failure study) that drives that are cooled then reheated actually fail more often than those that are just left heated/running.

ubiquibacon
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  • great thanks, i did not realize that there were vents at the bottom of the laptop, I thought only the opening for the fan needed to be open. – Zeynel Jan 03 '12 at 02:00
  • @Zeynel, it might also help to turn the laptop upside down. – soandos Jan 03 '12 at 02:09
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    I would add that this is very bad for the battery - leaving the battery at 100% charge with the temperature elevated for long periods of time will reduce the charge capacity to nearly zero. The rest of the laptop should be fine, though, if the cooling system does not get choked with dust. – user55325 Jan 03 '12 at 02:10
  • @user55325, i don't understand, when i close the lid and laptop goes to sleep is there still elevated temperature conditions? – Zeynel Jan 03 '12 at 02:20
  • @zeynel: Not for all practical purposes. – surfasb Jan 03 '12 at 02:21
  • The battery is not being harmed by leaving it charged or at operating temperature. The battery is "maintained" when plugged in, and the heat generated when a laptop is operated properly (good air flow) is not sufficient to damage the battery. I also suggest you explorer your power options, you can set closing the lid to do a variety of things. – ubiquibacon Jan 03 '12 at 03:55
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    The battery will not be "damaged" as such, but high voltage and temperature accelerates battery wear. More details: http://batteryuniversity.com/learn/article/how_to_prolong_lithium_based_batteries – user55325 Jan 03 '12 at 05:52
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    You could just remove the battery, as you're going to have the laptop plugged into mains anyway. – Joren Jan 03 '12 at 08:27
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    Also, if your laptop draws air through the keyboard (As does mine), you will not want to close the laptop unless it's off. – Steffan Donal Jan 03 '12 at 09:25
  • @soandos: I would be wary of running the laptop upside down. The ventilation is probably designed to produce good airflow in normal orientation. Convection will be different if the laptop is upside down, so cooling might be affected. This of course will depend on your specific model... – sleske Jan 03 '12 at 10:17
  • @Joren Unless you have your laptop plugged into an UPS you have the same power interruption = crash problem as a desktop. Since an UPS will cost about the same as a spare battery, if maximizing the life of a battery for occasional extended mobile use periods is a priority I'd recommend just buying a spare laptop battery instead. – Dan Is Fiddling By Firelight Jan 03 '12 at 15:22
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Theoretically yes, it matters. Practically, not really. Most computers nowadays are pretty solid in regards to quality, and it is a fair chance that you'll be sooner changing computers than that it is going to die out of wear and tear.

I put my home laptop into standby mode each night ... currently it is 28 days since it has last been restarted. It is a 6 and something year old machine.

The main reason I do that however, is not to save the laptop but to enable me to sleep better.

Rook
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  • thanks, so "standby" is "sleep"? Because mine goes to sleep when I close the lid. Is the hard drive inactive during sleep? – Zeynel Jan 03 '12 at 01:50
  • @Zeynel - What operating system is that? – Rook Jan 03 '12 at 02:26
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    There is [no difference](https://en.wikipedia.org/wiki/Advanced_Configuration_and_Power_Interface); whatever term or OS you use, the processor state will be S3. – Tamara Wijsman Jan 03 '12 at 02:31
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    @TomWijsman - Ah, so sleep is always ... glad to hear there is a consensus on that (names). – Rook Jan 03 '12 at 02:48
  • @TomWijsman: Depending on your OS and settings, any amount of things can happen when you close the lid on a laptop. For example, mine goes to S4 if it happens to be unplugged, or stays in S0 if it was plugged in. So why do you say there is no difference? – Joren Jan 03 '12 at 08:35
  • @Joren: I meant that there is no difference between "standby" and "sleep", S4 and S0 have nothing to do with that. As both terms refer to S3. – Tamara Wijsman Jan 03 '12 at 17:40
  • @Tom: Ah I see. – Joren Jan 03 '12 at 18:18
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If the environment is good enough to help preventing over-heating of the laptop, it should really not be a very big problem. In my experience, I have seen both people maintaining their laptop like a kid by turning it off even if they were away for half an hour and people who almost had it running the entire day. Well finally, the laptop which was overused or abused still works fine while the other one which was well used is now having serious problems with its battery.

Personally I do not like to work with a laptop that is fuming. So I give it a break when it gets hot. Otherwise it keeps running and when I go to sleep, I hibernate it. In that way it conserves power while all my programs are in the same state when I start my laptop again.

Bala
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