Lastwake Command

How to See What Woke Up Your Computer Last​

   Information

This will show you how to see what device, task, or etc... has woken up your computer from sleep or hibernation last in Vista, Windows 7, and Windows 8.

This will work best if you do this right after your computer wakes up, and before the next time is sleeps. Otherwise you may miss what last woke it previously.

OPTION ONE

Using the "lastwake" Command

1. Open a command prompt in Vista, Windows 7, or Windows 8.

2. In the command prompt, copy and paste the command below and press enter. (see screenshot below step 3)
powercfg lastwake
3. You will now see what last woke up your computer. (see screenshot below)


For example:
This is what last woke up my computer from above. Just for information purposes, you can look this up in Device Manager (devmgmt.msc).
HID=Human Interface Device

• Description - HID-compliant Bluetooth Mouse

• Instance Path - HID\VID_046D&PID_C71C&REV_0101&Col01

4. See related links below if you wish to not allow this device or item to wake the computer anymore.

OPTION TWO

Reading the "Wake Source" Event Viewer Log

1. For how, see: How to Read the Wake Source Log in Event Viewer for Vista, Windows 7, and Windows 8
That's it,
Shawn

Related Tutorials

---

• How to Read the Wake Source Log in Event Viewer for Vista, Windows 7, and Windows 8
• How to Enable or Disable Windows Media Center Updates to Wake Up the Computer
• How to See a List of Devices that are able to Wake Up the Computer
• How to Allow or Prevent Devices to Wake Up Computer
• How to See Available Sleep States on Your System in Windows 7
• How to See Available Sleep States on Your Windows 8 PC
• How to See the Last Shutdown Time of Your Windows PC​
• How to Change the Return to Sleep Timeout for a Unattended Wake Up in Windows​
• How to View and Override Power Availability Requests in Windows​
• How to Add or Remove "Allow wake timers" in Power Options in Windows​

 

[Brink]

If it turns out to be the culprit, then double check using OPTION ONE below for your network adapter properties to make sure that any "wake on" or "wake computer" type setting in the Advanced and Power Management tabs has been disabled.

http://www.sevenforums.com/tutorials/122027-devices-allow-prevent-wake-up-computer.html

 

[ColFrogfoot]

It says that only my mouse and keyboard can wake the computer. Ethernet isnt a device is it? just a cable?

And the reason it says they can wake my computer now is cause i unplugged them and put them in again. But yah ive continued testing and it looks like my ethernet cable is the reason

 

[Brink]

Ethernet would be your network adapter, which would technically be a device.

 

[ColFrogfoot]

Alright thanks, it didnt have the check beside it that it could wake my computer up from sleep but i unchecked the other box. Ill let you know if the problem persists?

 

[ColFrogfoot]

so yah it definitely is the ethernet, it happens when its plugged in so recently ive been taking out the ethernet, but in the settings it doesnt say that the ethernet can wake my computer. is there anything i can do against this?

 

[Brink]

Double check your Power Options to make sure that "Allow wake timers" is disabled to see if that may be it.

http://www.sevenforums.com/tutorials/778-power-plan-settings-change.html