I'm using Windows 8 on my Dell 5520 laptop, with a problem that has been happening for the past few days I can't hibernate my Laptop. When ever I do it, sometimes it shuts down my system and sometimes it restarted to login screen.
You should check the power options first. May be there is an incompatibilities with Hybrid boot. You can access power options via the "Control Panel".
- Carefully examine boot options.
- For the selected power plan, click "Change plan settings". Then examine options.
- Make sure "Show hibernate" is selected.
- Try deselecting the "Hybrid Boot" option. Restart the computer and check again.
- Access "Device Manager" and check ACPI options. Make sure no issues indicated.
- If you suspect any problem with battery, before going to advanced troubleshooting, remove the battery and connect to AC power and check whether the problem exist.
- Open "Event Viewer" and check "Administrative events" and "Windows logs \ System". Examine the logs. You can check individual operational logs.
- Application and Service Logs > Microsoft > Windows. Check "Kernal Power" logs to check whether there are illegal operations. I assume your machine is auto updating and is patched (drivers and Windows updates).
You can also boot to a Diagnostic Startup from msconfig (just search for msconfig using the search box located in the Start Menu).
- In the "General" tab, make sure "Diagnostic Startup" is selected. Before confirming, not the "Startup settings" (Tab) that already exist.
- You will be able to start with minimal services and devices. This will ensure no external problem that caused by a service or a device driver.
- If the problem does not occur, you should go back to a normal startup with a custom selection of "Startup" settings. Examine.