Sorry, but this question is too easy to answer. Of course login screen is not affected by StartIsBack at all. I was supposed to know this how, and if it was too easy to answer, then how come it took two days..?! You could've easily installed the program and try it and uninstall it if you didn't like within 5 minutes. I don't know why you would even expect a replacement Start Menu program to affect Windows login screen anyway. I couldn't've installed the program, because I haven't installed Windows 8 yet, I am still deciding if I want to or not. Also, if I'm going to have to pay for this app eventually, I'd much rather buy Stardock's Start8, as it's a lot more mature.