Hi There, I'm trying to install win7 pro on my rMBP of late 2013. When I boot to the instal sequence of win7 and its starts asking me to input location, date and languages the keyboard and trackpad are non reactive. I've tried to hook up an external mac and pc keyboard before booting to the install sequence. Also tried to attach a mouse. All are non reactive. No luck at all. When I boot to OSX all input devices work fine. Anybody have some tips? Im hoping it is a simple problem but It might be that the following has something to do with the problem: Im not using bootcamp to instal WIN7 because I all ready I have two OSX 10.9 installations running on my comp. Ive installed the rEFid bootmanager to be able to run two OSX versions and one Windows version. This topic may be related to this one: http://forums.macrumors.com/showthread.php?t=1691611 Hope you can help!