I used to have a problem whenever I put my computer into sleep, few hours later I always found it already woke up. It’s frustrating because I know that moving my mouse won’t wake up, since I’ve already disabled the mouse from waking up the computer. What else could it be ? Sure if you touch the keyboard it will wake up, but I know it’s not the keyboard that cause the problem.
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What could it be the reason when my Windows 7 just randomly wakes up ?
After research I found the problem, it’s your computer’s network controller adapter that wakes up your computer. This problem almost always happen on a desktop computer that are connected by Ethernet. Because of the fact that when you put your computer into sleep, or even when you turn off your computer your Ethernet adaptor is not completely powered off. On the other hand, if you are connected by wifi, most network adaptors will turn off the device when it goes to sleep.
How Do I fix the problem ?
To fix the problem go to Control Panel > Network and Internet > Network Connections
You should see your local area connection
Go to properties
Then go to Configure … (be sure to have the right one highlighted)
Now under the Power Management MAKE SURE uncheck “Allow this device to wake the computer” and it’s sub option
And you should make it looks something like this, and you should be good to go.
No more frustration find your computer being awake and knowing that you have put it into sleep.