HELP!>>"Your disk could not be partitioned" (MORE COMPLEX PROBLEM)
I decided to reinstall my Windows 7, so I delete the Windows partition and then put my disk into 1 single partition... I downloaded the support software from Apple, it saved it by itself, I did not download ISO for Windows because I have it already.... But for some reason, I may have clicked the 'install' button in the "create a partition for Windows" screen and It was not divided like what I want, so I pressed cancel right after my Mac was greying out to boot into the windows installer thingy. It did boot, but it shows (something like this) after instead of the 'windows is loading files' thingy: "No bootable devices was found, insert one and press any key." So I did insert my 'wininstall' USB in but when I pressed a random key, it does not do anything.... I restarted my Macbook and it keeps showing up that screen. I restart my Macbook again and hold alt/option key to be able to access to OS X. I have followed this guide (except for the 'technical' method) but it also does not work. I have checked the disk utility to erase the windows partition but there is none 😟 Please please please help me! I might have corrupted something 😟
BTW here is the picture that it shows when I can't make a partition for windows
Tech: Macbook Pro Retina//Mid-2014//OS.X Mavericks (10.9.5)
MacBook Pro (Retina, 13-inch, Mid 2014), OS X Mavericks (10.9.5), NEED URGENT HELP!