What is causing screen freeze or total system crashes with Windows 10 Preview on AMD A6 and other cpus? Linux and Ubuntu had this problem for months before they solved it. Insider preview feedback seems to indicate major problems with AMD graphics. In my case, I am using only the cpu A6-5400k without a graphics card. Asus A78M-E motherboard, 4gb ram, and either an SSD hard drive or older SATA2 mechanical drive.