Looking up codes for EventData in Event Properties, computer unexpectedly enters into hibernation mode

Hello Functure,

Welcome to Microsoft Community Forum.

As per the description, I understand that your computer unexpectedly enters into hibernation mode. You checked the event viewer logs and looking for some help in reading the logs and troubleshooting the issue.

I would appreciate if you can provide us the following information to help us understand the issue better.

1. Are you able to wake the computer through mouse and keyboard when it automatically enters into sleep or hibernation made?
2. Were there any significant software or hardware changes made prior to this issue?

Event viewer gives you all the information, such as when a user logs on to the computer or when a program encounters an error. Whenever these types of events occur, Windows records the event in an event log that you can read by using Event Viewer.

From the Event Viewer logs above “EventData Data[name=Reason] >7” does not give any relevant information, however, we can drive relevant information from Event Id: 42, Source :Kernel-Power, Sleeping event that it shows.

Windows Kernel Event Id: 42 indicates that the last sleep transition was unsuccessful. This error could be caused if the system stopped responding failed or lost power during the sleep transition.

To get more information on event viewer logs, please refer the Microsoft article below.

What information appears in event logs? (Event Viewer).

http://windows.microsoft.com/en-in/windows/what-information-event-logs-event-viewer#1TC=windows-7

Let’s try these methods below and check if that solves the problem.

Method 1:

First, I would suggest you to run Windows in-built power troubleshooter to get the problem automatically detected and fixed.

Open the power troubleshooter.

http://windows.microsoft.com/en-US/windows7/Open-the-Power-troubleshooter

Method 2:

Let’s place the computer in clean boot state and check if issue persists.

Clean boot is the process of starting your computer by using a minimal set of drivers and startup programs so that you can determine whether a background program is interfering with your computer performance.

You may follow the steps in the article below to perform clean boot.

How to perform a clean boot in Windows

**http://support.microsoft.com/kb/929135**

Note: After you have finished troubleshooting, follow these steps from section “How to reset the computer to start normally after clean boot troubleshooting” to reset the computer to start as usual.

Method 3:

If the issue still occurs, you may create a new power plan and check.

Follow the steps in the article below to create a new power plan

“Change, create, or delete a power plan (scheme)”

http://windows.microsoft.com/en-US/windows7/Change-create-or-delete-a-power-plan-scheme

You may also check updating all the important drivers like Display, sound, and network drivers etc.

Update a driver for hardware that isn't working properly

http://windows.microsoft.com/en-US/windows7/Update-a-driver-for-hardware-that-isnt-working-properly

Hope this helps. Please let us know the results. Feel free to write us back for any further assistance, we’ll be glad to assist you.