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I just bought a new laptop (a Lenovov V570) with Windows 7 installed to be used as a server, however, the laptop hibernates after being idle for 3-5 hours.

I changed the power management settings so that the computer never sleeps, but it still hibernated itself.

I read a lot of questions about this issue and most of them seemed to be related to overheating, so I tried using a cooling pad with the computer to see if it wouldn't sleep. So far none of these ideas have worked.

I left it on overnight and then read the Windows event logs the next morning. The sleep event log said: The system is entering sleep. Sleep Reason: System Idle.

Is there a way to stop the system from sleeping after idling for a certain amount of time?

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Often laptops come with manufactorers own power management software that overrides windows settings. Can you look through the menus to see if this is the case here? –  Paul Jun 14 '12 at 13:43
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I'd say the main issue here is that you bought a laptop to be used as a server. It's not even a business class laptop. –  Bon Gart Jun 14 '12 at 15:15

4 Answers 4

up vote 5 down vote accepted

Open the control panel, go to Power Options and click Change plan settings. Then click on Change advanced power settings. Check all settings there, you should find the one which causes the idle shutdown.

A guide to changing the power settings can be found here.

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I never thought to look in advanced settings, because I thought I'd already tried that. It works perfectly now. Thanks for your answer! –  StackUnderflow Jun 15 '12 at 18:13

Please confirm that whether your laptop runs 24 hours. and when you restarts the laptop is it used to be a new start or like from hibernation mode. You can follow "Speakr's" method. b ut remember laptop are not made to be used as servers or a game station.

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Lenovo has its own power settings etc.

Check on the task pane near the clock below. Change the Power Settings to never sleep.

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It is in the Power Management Advanced Settings tab where Windows still, unfortunately, has hidden all these check boxes in a list format.

The one you want is under:

Sleep > Hibernate After

You can actually type "Never" in there for the plugged in setting.

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