Why Windows so many times wakes up by itself from sleep mode ? It is frustrating but we will teach you how to fix it

It has happened to me many times: I put Windows in Sleep Mode and when I return to my computer hours later, the computer is wide awake. Frustrating to say the least.

So I decided to find the reason why this happens. After investigating and investigating, I found out why it happens and how to fix this situation for good.

Has it happened to you? I am willing to bet that many of my readers have gone through this upsetting situation and still do not know how to fix it, or why it happens, so here goes:

There are several reasons, (I found out), why Windows may wake up by itself from Sleeping Mode. A program may be on updating auto mode, the mouse software may act up, and many other Windows internal mysteries also may act up.

However, the most likely culprit is your Network Card, but other issues can cause this problem. First of all we must find out what event or hardware device caused Windows to wake up.

Here is how to find out the culprit:

-Go to "Start", "All Programs", "Accessories", "Command Prompt".

-On the black window you'll see C:\users\(your name)>

-Type "powercfg/lastwake" after (your name). In my computer it would look like this:

-C:\users\george\powercfg/lastwake

-Press enter

There you are, next line will tell you what caused the wake up, and most likely it was your Network Card.

If that was the case. here is what to do:

-Right click "My Computer" and select "Properties".

-Click "Device Manager" on the left side of the Properties window.

-Go down the list of devices until you find "Network Adapters" and click on the little triangle to  expand; this will show your network card name.

-Right click on the network card name and select "Properties".

-Click the "Power Management" tab to open it and then uncheck the box "allow this device to wake the computer".

That is all, from now on your Network Card will never again wake up your computer when it is on the Sleep Mode.

If the above does not resolve the problem, "Power Management" options may be the problem; do the following:

-Click "Start"/Control Panel/System and Security/Power Options.

-In "Power Options" click "change power options" then click "change advanced power settings".

-Go down the list of settings to "Multimedia  Settings";  click "when sharing media" and set it to "allow the computer to sleep".

This should take care of it.

Have fun,

George Freire