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My new computer starts on its own when it's supposed to be asleep

My new computer starts on its own when it's supposed to be asleep

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sfajar
Member
183
03-14-2026, 01:13 AM
#1
Here is a quick check on my new PC: I just bought an Asus B550M-A WiFi II board and put Windows 11 Pro 64-bit on it. The computer keeps waking up by itself when I try to sleep. Sometimes it sleeps for four hours, but then wakes back up right away. When I run the command "powercfg -lastwake," Event Viewer also shows the wake signal as coming from the Power Button (even though nobody pressed it). I installed all the drivers from Asus for this board. What could be making this happen?
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sfajar
03-14-2026, 01:13 AM #1

Here is a quick check on my new PC: I just bought an Asus B550M-A WiFi II board and put Windows 11 Pro 64-bit on it. The computer keeps waking up by itself when I try to sleep. Sometimes it sleeps for four hours, but then wakes back up right away. When I run the command "powercfg -lastwake," Event Viewer also shows the wake signal as coming from the Power Button (even though nobody pressed it). I installed all the drivers from Asus for this board. What could be making this happen?

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CA_KoolDude
Junior Member
16
03-14-2026, 06:36 AM
#2
Here: "(no, it never comes from just pressing the power button.) Think about how a faulty switch might cause vibrations or heat to make the connection break and reconnect at strange times. That happens often without warning. Look at where the case is glued together. Make sure every screw or clip is tight and sticking firmly."
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CA_KoolDude
03-14-2026, 06:36 AM #2

Here: "(no, it never comes from just pressing the power button.) Think about how a faulty switch might cause vibrations or heat to make the connection break and reconnect at strange times. That happens often without warning. Look at where the case is glued together. Make sure every screw or clip is tight and sticking firmly."

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MooMoo2011
Senior Member
690
03-14-2026, 09:25 AM
#3
The wires sticking out from the motherboard are snugly connected. I really want to avoid cutting those front panel cables open and unplugging them. Let's just plug both ends of a multimeter into either side of the power button area, then try turning the PC off and on again to see if it suddenly shows a connection when it was supposed to be broken.
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MooMoo2011
03-14-2026, 09:25 AM #3

The wires sticking out from the motherboard are snugly connected. I really want to avoid cutting those front panel cables open and unplugging them. Let's just plug both ends of a multimeter into either side of the power button area, then try turning the PC off and on again to see if it suddenly shows a connection when it was supposed to be broken.

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Ethonica
Junior Member
5
03-14-2026, 09:38 AM
#4
Turn it off, take out the plug, then look at the switch to see if it's working properly.
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Ethonica
03-14-2026, 09:38 AM #4

Turn it off, take out the plug, then look at the switch to see if it's working properly.

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209
03-19-2026, 07:05 PM
#5
The reason why my theory about a broken power button is wrong is that I've seen the same problem happen more than six times on different systems. Every single time, the computer woke up when it shouldn't have. Usually, it just woke up right away because someone pressed the power button. If there were real electrical problems with the button making bad connections, then the computer would have done other weird things like putting itself to sleep randomly (this never happened) or shutting down completely because the button was held too long (that also never happened). It would turn itself on even when it was turned off properly. From the times I tried to fix this by asking my tech support team, they said it was just a random app triggering an event that woke up the computer, but Windows reported the reason as "power button pressed." Edit: At least since I started using computers again and checking if something is stopping it from sleeping on its own, I ran some commands to see what's going on. Then I tried telling Windows to ignore certain things. This might help a little bit, but I haven't needed to do that in a long time.
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IninhaGamer_BR
03-19-2026, 07:05 PM #5

The reason why my theory about a broken power button is wrong is that I've seen the same problem happen more than six times on different systems. Every single time, the computer woke up when it shouldn't have. Usually, it just woke up right away because someone pressed the power button. If there were real electrical problems with the button making bad connections, then the computer would have done other weird things like putting itself to sleep randomly (this never happened) or shutting down completely because the button was held too long (that also never happened). It would turn itself on even when it was turned off properly. From the times I tried to fix this by asking my tech support team, they said it was just a random app triggering an event that woke up the computer, but Windows reported the reason as "power button pressed." Edit: At least since I started using computers again and checking if something is stopping it from sleeping on its own, I ran some commands to see what's going on. Then I tried telling Windows to ignore certain things. This might help a little bit, but I haven't needed to do that in a long time.

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Pynz
Junior Member
34
03-20-2026, 07:18 AM
#6
I get your point, and I think it's really safe to say that if that button works every single time without ever turning off the computer or doing anything else weird, then it's probably okay. Since I'm not sure what steps to take right now, I guess I'll have to check with a group of people who specialize in Windows, just like you suggested.
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Pynz
03-20-2026, 07:18 AM #6

I get your point, and I think it's really safe to say that if that button works every single time without ever turning off the computer or doing anything else weird, then it's probably okay. Since I'm not sure what steps to take right now, I guess I'll have to check with a group of people who specialize in Windows, just like you suggested.

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LaBreezy2544
Member
104
03-20-2026, 07:13 PM
#7
My HP Omen 30L PC fans spin on and off all night when I turn my computer into sleep mode. When the power is completely cut off, they stop spinning. It could also be Windows Update checking for updates every single night, but that should only happen once a day instead of every night. And yes, maybe these default settings are just waking up to do this task.
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LaBreezy2544
03-20-2026, 07:13 PM #7

My HP Omen 30L PC fans spin on and off all night when I turn my computer into sleep mode. When the power is completely cut off, they stop spinning. It could also be Windows Update checking for updates every single night, but that should only happen once a day instead of every night. And yes, maybe these default settings are just waking up to do this task.

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demizio1
Member
178
03-23-2026, 03:20 AM
#8
This thing keeps happening right after you turn off your phone, even though you're awake all day. I asked MS Support more than once about fixing it, but nobody has found a real fix yet.
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demizio1
03-23-2026, 03:20 AM #8

This thing keeps happening right after you turn off your phone, even though you're awake all day. I asked MS Support more than once about fixing it, but nobody has found a real fix yet.