Hello. I installed the public beta 6 of El Cap the other day. Before, I has Windows 7 on Bootcamp which worked perfect. After the install of El Capitan beta, when I try to start Windows, it just loads the scenen where there's a blinkning "-" sign forever without really booting up the OS. Before this screen with the blinking sign only lasted a few second before the actual Windows booting screen cane up. Any idea what I can do? Is a downgrade back to Yosemite the only option?