Windows 10: What is draining my battery when screen off?

Hi folks,

I normal circumstances when laptop is on battery with screen off (working on idle) there should be no quick battery drain, rather it should last more when idle

my Yoga3 is opposite - when screen off, some processes definitely are running - at least I can hear fan noise then as well as rainmeter shows high cpu use when i i press any key to turn on the screen

is there any way to check what/which process is using then?

indexing is disabled on battery

:)

 

Battery Drain after using "project my screen"

The Project my screen is going to drain the battery when you project your screen over Wi-Fi. If you are still seeing a battery drain after completing your Project my screen session, you should use Battery Sense to see which app is currently drawing the
most power.

 

It MUST be a virus (Lumia 925)

When using YouTube on internet explorer my phone freezes and the screen turns to what I call black and white noise. It stays like that until the battery dies. The only thing I can do to speed battery drain is to open the camera app by holding down the button
on the side of the phone - the screen doesn't change but I know the app opens because the phone vibrates as usual. When the battery drains and I recharge the phone everything is back to normal, but if I spend enough time on YouTube it'll happen over again.

Now you're not going to tell me this isn't a virus are you? What else could it be?!

Thanks in advance.

 

Check out here: Power Efficiency Diagnostics Report - Create in Windows 10 - Windows 10 Forums