Hi Jiri,

To prevent this from happening follow the below steps:

1. Click Start button, click Control Panel, click System and Security, and then click Power Options.
2. On the Select a power plan page, click Change plan settings for the plan that you want to change.
3. On the Change settings for the plan page, click Change advanced power settings.
4. On the Advance settings tab, expand Sleep, expand Allow Hybrid Sleep, and choose OFF.
5. On the Advanced settings tab, expand Sleep, expand Allow wake timers, choose Disable and then click OK.
6. On the Advanced settings tab, expand USB settings, under USB settings expand USB selective suspend settings, choose Disable.
7. Click Apply and then OK to save the changes.

Check if the above steps work and post the results.

I have aleready diasabled Wake timers, but I don't se option hybrid sleep. That dind help. I will try changing the USB settings as you suggested, however I don't have anything connected to my external USB ports. All periferal are connected wirelessly (BT mouse, BT headphones, BT/WiFi cell phone, Printer via NAS connected to my router, and externa screen and speakers are connected via WiDi). I will post the result tomorrow.

Thank you.

Jiri

Hi Jiri,

Please try the below mentioned steps:

1. Navigate to the device manager screen and double click on network adapters to expand it.
2. Double click the network adapter name.
3. Click the power management tab. Look and see what boxes are checked.
4. If the allow this device to wake computer is checked, uncheck it.
5. Click ok or apply and exit.
6. Restart the computer and check the functionality.

Please post the results.

Already tried that too, without effect. I also didn't mention, it might have started after windows update, but I'm not sure about that, so i tried to return my computer to the previos state also without effect.

Also when I put run powercfg -lastwake, it won't give back anything, and on powercfg /devicequery wake_armed it gives back my network adapter, so I disable it with powercfg too, again no effect.

Well today it turned on againg, so I guess it didn't hepl after all :(

Hi Jiri,

If the steps do not help, let’s try to uninstall and reinstall both the video card drivers.

Please follow the below mentioned steps to uninstall both the video card drivers:

1. Click “Start”.
2. Click “Control Panel” and select “Device Manager”.
3. On the “Device Manager” window, expand “Display adapters”.
4. Right click “Intel(R) HD Graphics” and click “Uninstall”.
5. Ensure to check the box “Delete driver software for this device”.
6. Follow the on-screen instructions to uninstall the drivers.
7. Restart the computer.

After the system restarts please run Windows updates.

1. Steps to run “Windows updates”:
2. Push the “Windows” key to open “Start” menu.
3. Type “Windows Updates” in the search box and select it.
4. Run the Windows Updates.
5. Check and install the Intel graphics card drivers displayed by Windows updates and restart the system.

Check and post the results.

Ok I observed my laptop las couple days and it didn't turned on again. I don't understand it, mabye I have gosts here :) I didn't reinstal the drivers yet. I'll try that in case that the problem returns.

Thank you for your help.

Jiri