I use a Lenovo Yoga 14 for my personal stuff. A few weeks ago I ran updates. I noticed that battery life dropped from nearly 10 hours to less than 3. Closing the lid puts the Yoga to sleep, so opening it is a breeze and I have a working desktop in about 20 seconds or less. After the updates, closing the lid still did the sleep thing, but on opening the lid the Yoga was dead.
So, I started poking. I discovered the latest rounds of updates had installed a Lenovo Screen Updater. Holy Battery Drain. The CPU was grinding away at 50%+ constantly.
Remove it. Now I get this here:
Seeing as how this was associated with the touch screen concepts, I imagine that this might help Win7, Win8, Win 8.1, et cetera – anything else that runs a touch screen with Lenovo and Windows.