Windows 7 does not boot after Mavericks

[Makaveli6103]

I searched for a while but does not seem like anyone is having the same issue. If I launch my Windows 7 partition from Startup disk or from holding Option at startup it never boots. It just sits at a black screen and I have to force shutdown my iMac to get it to work.

 

[simon201]

I've a similar issue although it was the same in ML. I just get flashing dash at the startup. My workaround is having a bootable windows disk in my drive and simply not pressing any key to start up from the disk. It then boots into bootcamp. Hoping that a bump on this thread might get an answer.