Today I bought a new computer for my mother in law, a Lenovo Ultrabook Flex 15". From the first impression it's a very neat machine with power and it's also well crafted. One thing I noticed from the very beginning: after starting Windows the display dimmed automatically without any reason. I'm currently setting the machine up, installing updates and stuff. Strange thing: when rebooting during the various updates I noticed that the display was in full intensity! What the fuck?
After googling a little I found the solution: it's a default setting in Windows 8 - I admit that I didn't use Windows 8 before - and I'm trying not to do so in the near future. How can Microsoft set this setting, which even cannot be found by and expert without help, to a default value that sucks? No end user will find (or even search for it) here.
How-to-Geek shows how to get rid of this stupid setting: http://www.howtogeek.com/107173/disable-windows-8s-adaptive-brightness-to-fix-dark-screen-problems/