2014 15" MBPro, OSX Mavericks, Windows 7 bootcamp. Was booting into Windows, only came up with a black screen, restarted, Windows needs to be repaired. Once the repair screen comes up there is no way to continue as the keyboard and trackpad do not function. External keyboard/mouse don't work either. I assume it is because Win7 includes no native USB3 drivers, same as the issue with installing it. http://forums.macrumors.com/threads...t-complete-install-no-keyboard-mouse.1603694/ Windows Recovery apparently won't load the drivers when it starts either. Thought I could boot to the Win7 install USB I created for the MBPro (and choose repair option from there) but that has the same issue; no keyboard/trackpad so I can't continue. I thought the drivers were installed to the USB key by BootCamp Assistant, but if they are, Repair isn't loading them. From the directions in that linked thread, it seems that OSX "primes" the Windows partition by installing the USB drivers. So maybe the drivers are just copied to the Windows partition, and not the USB drive? Does anyone have any clever workarounds to repair my Windows install without having to just blow it away and start over? This is such stupid frustrating thing.