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Computer won't stay in sleep mode


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#1 dempseyjosh

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Posted 30 March 2009 - 05:36 PM

How can i find out what is keeping my computer from going into sleep or hibernation mode? I have the power management set to turn the monitor off after 10 minutes of no use and to put the computer into sleep mode after 30 and hibernation after 1 hour. It does turn the monitor off, but then when i wake up the screen is on like the computer has been in use the whole night. How do i find out what the problem is?

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#2 Budapest

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Posted 31 March 2009 - 06:41 PM

Some devices have the ability to resume/bring the system out of hibernation. Most commonly it is modems or network adapters that are setup this way - but it could be almost anything doing this. But I would start by checking your modem/network adapters settings
The power of accurate observation is commonly called cynicism by those who haven't got it.

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#3 dempseyjosh

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Posted 31 March 2009 - 07:35 PM

how do i check to see if it is set to bring the computer out of hibernation?

#4 Budapest

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Posted 31 March 2009 - 07:55 PM

Check your devices in Device Manager (Start > Run > type "devmgmt.msc" (without the quotes) and press Enter).

For example, on the computer I am currently using there is a Broadcom Controller under Network adapters. If I right-click on it and select Properties > Power Management tab there is a setting that will allow the device to bring the computer out of standby. You need to check that any such settings are not enabled.
The power of accurate observation is commonly called cynicism by those who haven't got it.

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#5 dempseyjosh

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Posted 31 March 2009 - 08:13 PM

ok, most things don't have the power management tab, but of the things that did, only the keyboard is/was set to bring the computer out of standby

#6 Budapest

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Posted 31 March 2009 - 08:44 PM

You might want to check for any "wake on LAN" or other wake settings in the BIOS.

http://michaelstevenstech.com/bios_manufacturer.htm
The power of accurate observation is commonly called cynicism by those who haven't got it.

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#7 dempseyjosh

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Posted 01 April 2009 - 08:33 AM

i looked in the bios, there was nothing in the power management setting that said wake on lan, but turning off the hard drive was disabled, i enabled that.

#8 Budapest

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Posted 01 April 2009 - 05:11 PM

Try unplugging everything from the computer other than the keyboard and monitor and see if it is any better.
The power of accurate observation is commonly called cynicism by those who haven't got it.

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#9 StickDude101

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Posted 01 April 2009 - 06:17 PM

Maybe someone is walking into your room at night ;).. APRIL FOOLS :thumbsup:

#10 snowdrop

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Posted 01 April 2009 - 07:01 PM

Have you checked to see if there is any 'unwanted guest' on the computer that is trying to 'phone home' while you are asleep?

Also, is there any good reason why you do not actually turn the computer off and power down at night ?




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