I bought a new rMBP yesterday, I have to use some windows programs for school so I figured Bootcamp would be the best option. Due to the fact that I dont have a disk drive i put it on a flash drive and started the I got through the partitioning part and then restarted my computer, went through the installation process in windows then it told me to remove the flash drive from my computer and restart. When I restarted the computer this time it went to a gray screen for a while then continued to a black screen that wanted me to reinsert the boot drive and press any key to continue. When I reinserted the boot drive and pressed a key nothing happed. I tried this a couple times and it wouldn't work, what do I do?