I've written a review covering mostly the hardware compatibility piece of Windows 10 Technical Preview Build 9926 and Build 10041 on Lenovo IdeaPad G50-70 laptop, including major problems with SD card and touchpad functionality. You think this is a Windows article only? Then, if you're a Linux user, you should also take a look. There's a hidden message in there. Well, not really hidden. But still. Enjoy.