Boot camp partition option is greyed out
Just got my late 2012 Imac back from a 3tb hard drive replacement recall. Running Maverick 10.9.5 (prior to replacement was 10.9.1). First thing I did after getting it back was trying to run boot camp. I've done this before without issues. This time around though, I can't install windows. Boot camp doesn't give me the option to partition my drive as the option is greyed out. Boot camp assistant creates the windows bootable usb & downloads the windows support tools, but right after that, there is just a button that says "quit". When you press it, it just closes the boot camp window and that's it. It doesn't do anything else. I have screenshots but it won't let me insert pics of the screenshot on here.
iMac, OS X Mavericks (10.9.5)