Hi everyone, I have had this issue for a few days and whenever I search for it everyone has similar issues but not the same as mine so sometimes I can't even try their solutions. Mostly, every issue is before installation or not detecting the USB but mine is after 
Let me explain, so my problem is that I wanted to have a second hard drive instead of the superdrive since I don't use it, I bought an SSD and I made a bootable Mavericks USB, so I replaced the HDD with the SSD and the superdrive with the HDD and OS X recognized both of them, so everything was fine. Then I had the need to use Windows so I went ahead and used Bootcamp to install it, I made the bootable usb and got to the part where I have to select the drive where I want to install it, I had to format it to NTFS in order to select it etc. you guys know the procedure, but after the formatting, I couldn't install it either, something about boot and bios and an error 0x800024 or something like that, so after hours of research I heard you could just disconnect the SSD so only 1 drive would show and make the windows install go through, so thats what I did, I opened up my MBP and unplugged the little black cable connected to the main board, so that left me with the HDD connected to where the superdrive was supposed to be, so far so good, I turned on my MBP again and tried the installer this time it worked smoothly, it installed windows 7 perfectly, took some time but it did so I was happy I found a solution, though I was wrong, when I went to plug back in the SSD and turned my MBP on I could select the OS X just fine without problem but if I select the Windows HD I keep getting the " No bootable device found" black screen, I mean, I already installed it and it boots fine if I unplug the SSD but if I plug it back the windows hard drive stops booting, only the OS X does, so if you guys know what am I doing wrong please help me, I don't want to unplug the SSD every time I want to use windows, there should be another solution right? thanks in advance guys
Let me explain, so my problem is that I wanted to have a second hard drive instead of the superdrive since I don't use it, I bought an SSD and I made a bootable Mavericks USB, so I replaced the HDD with the SSD and the superdrive with the HDD and OS X recognized both of them, so everything was fine. Then I had the need to use Windows so I went ahead and used Bootcamp to install it, I made the bootable usb and got to the part where I have to select the drive where I want to install it, I had to format it to NTFS in order to select it etc. you guys know the procedure, but after the formatting, I couldn't install it either, something about boot and bios and an error 0x800024 or something like that, so after hours of research I heard you could just disconnect the SSD so only 1 drive would show and make the windows install go through, so thats what I did, I opened up my MBP and unplugged the little black cable connected to the main board, so that left me with the HDD connected to where the superdrive was supposed to be, so far so good, I turned on my MBP again and tried the installer this time it worked smoothly, it installed windows 7 perfectly, took some time but it did so I was happy I found a solution, though I was wrong, when I went to plug back in the SSD and turned my MBP on I could select the OS X just fine without problem but if I select the Windows HD I keep getting the " No bootable device found" black screen, I mean, I already installed it and it boots fine if I unplug the SSD but if I plug it back the windows hard drive stops booting, only the OS X does, so if you guys know what am I doing wrong please help me, I don't want to unplug the SSD every time I want to use windows, there should be another solution right? thanks in advance guys 