Windows 7 Forums

Welcome to Windows 7 Forums. Our forum is dedicated to helping you find support and solutions for any problems regarding your Windows 7 PC be it Dell, HP, Acer, Asus or a custom build. We also provide an extensive Windows 7 tutorial section that covers a wide range of tips and tricks.


Windows 7: Power button no longer wakes computer from sleep

29 Oct 2015   #1
raphael75

Win 7 64-bit
 
 
Power button no longer wakes computer from sleep

My current Win 7 installation was installed in July, 2013. From the time I installed it, I would put it into sleep mode by going to Start > Shut Down "arrow", and selecting Sleep every night. It would go to sleep and the power LED would flash. I would then press the power button the next day and it would wake up.

This worked perfectly until the last week or so. Now when I press the power button the power LED continues to flash for about 3 seconds, and then the light goes out. The only way I can get it to turn on is to press the power switch on the power supply to the off position, leave it off for a few seconds, flip it back to the on position, and then press the power button on the front.

When the computer comes back from this state, it acts like it's turning on from being fully turned off (I see the BIOS screen, etc.), but all the stuff I had open are still there. I guess this is like coming back from hibernation?

I don't know what happened to cause this. I have made no changes to the power configuration, no hardware changes, no driver updates. Maybe it was a Windows update that caused it?

How can I make the power button wake up the computer like it used to?

Thanks!


My System SpecsSystem Spec
.
29 Oct 2015   #2
Alexbay218

Windows 7 Ultimate x64
 
 

I can think of 3 reasons
1. The wiring for the switch could have detached from the motherboard (doubt that).
2. Maybe windows is having issues resuming from sleep (I also doubt that).
3. Hibernate is turned on.

Disable Hibernate and see if it works Hibernate - Enable or Disable

Also, you can enable the keyboard to wake the computer through device manager.
My System SpecsSystem Spec
30 Oct 2015   #3
DavidE

Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64
 
 

Look at Windows Update History to see what Windows updates were installed since the problem started.
Look at Event Viewer for any Errors and Warnings that could help determine what the problem is.

Do you have a Restore Point, or better yet a System Image backup from before the problem started ?
If you do, you can try Restoring from before the problem started.
If you have Restore Points, you can view changes that Restore Point would "undo".

If "restoring" works, start re-installing updates and changes one at a time to try and find what update/change caused the problem.
My System SpecsSystem Spec
.

30 Oct 2015   #4
AddRAM

Windows 7 Pro x64 Windows 10 Pro x64
 
 

When you turn off the power supply you are killing the power to the board, so when you turn on the pc you are restarting windows, totally normal. Why isn't moving the mouse or touching the keyboard bringing it out of sleep ? My C70 did the same thing with the power button flashing and I had to push the button, but now I just have to move the mouse, I'm away from home now so I'll check the settings later but I do know I always disable hybernation.
My System SpecsSystem Spec
30 Oct 2015   #5
DavidE

Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64
 
 

But the OP stated

Quote:
When the computer comes back from this state, it acts like it's turning on from being fully turned off (I see the BIOS screen, etc.), but all the stuff I had open are still there. I guess this is like coming back from hibernation?
To me that sounds like it is resuming from Hibernate, not the same as cold boot, the previous session is "resumed".
I see this when i sleep a PC using Hybrid Sleep, and power is interrupted while sleeping.
If I turn off power when in hybrid sleep, the PC resumes from hibernate, as it should.

imho, the question is to why the OP PC "flips" to hibernate, shortly after entering sleep, if power is not interrupted.
My System SpecsSystem Spec
30 Oct 2015   #6
DavidE

Multi-Boot W7_Pro_x64 W8.1_Pro_x64 W10_Pro_x64
 
 

Also, for me a blinking PB light indicates I'm in S1 sleep state.
I use S3 sleep, the PB button does not blink, it's a deeper sleep state than S1.
I don't know if this is important, i only use S3.

Sleep States - See Available Sleep States
My System SpecsSystem Spec
Reply

 Power button no longer wakes computer from sleep




Thread Tools Search this Thread
Search this Thread:

Advanced Search




Similar help and support threads
Thread Forum
Computer wakes up after I put it to sleep
Please forgive but I do not know computer lingo or much about computers at all, so be gentle. My problem is this: When I put my computer to sleep sometimes it will wake up on its own and there is no one in the room. If it is still off when I come into the room it will turn when I turn on a...
General Discussion
Computer wakes itself up on its own from sleep - why?
My PC seems to be waking itself from sleep without a clear reason. It does not appear to be harming my computer but this interferes with some of the tasks I have scheduled (in the Task Scheduler) related to waking up from sleep and downloading files (related to my job). When I checked the...
General Discussion
BSOD when computer wakes up from sleep
My laptop will start just fine, but if it goes to sleep when I try to wake it up it will crash. This is not a random issue, it happens every time the computer wakes up. When the problem first started, it would give an error box that read "dmw.exe Application Error" before it would go to the...
BSOD Help and Support
Computer wakes 1 second after going to sleep
Title says it all. I have searched for a while and feel like I have tried most fixes I've seen but the problem persists. Weather I manually put it into sleep or not, it goes to sleep for about a second then wakes up, same thing every time. when I run the "powercfg lastwake" command, I get: ...
Performance & Maintenance
Computer wakes up after seconds in sleep
Hello, I'm new here and I have a problem with Windows 7. I cannot use the sleep function! This is is so frustrating.. I used to put my computer to sleep all the time in XP. But when I upgraded to W7 a while ago, my computer just wakes up instantly after going into sleep mode, as if I was...
General Discussion
PC wakes after 5 minutes....source power button....need advice
hello, my win7ult pc has worked flawlessly until i installed a new LCD cable and microphone behind the display. Then the battery would not charged....fixed that....now the pc wakes up every five minutes when it is asleep.... I found in events log that it is my power button that is cause the wake...
Performance & Maintenance


Our Sites

Site Links

About Us

Find Us

Windows 7 Forums is an independent web site and has not been authorized, sponsored, or otherwise approved by Microsoft Corporation. "Windows 7" and related materials are trademarks of Microsoft Corp.

Designer Media Ltd

All times are GMT -5. The time now is 08:53.

Twitter Facebook Google+



Windows 7 Forums

Seven Forums Android App Seven Forums IOS App