Need help with multiple drives and Bootcamp.

[mrcrazymode]

Hi!

I removed the optical drive from my MBR and replaced it with a second hard drive hoping to install windows on it so I can play some games. I experienced some problems installing windows, and some recommended that I disconnect the OS X drive before installing, which worked. I installed windows 8.1 Pro through a BIOS install (with disc) and it works well. I prefer this method since whenever I install it using bootcamp (EFI method) i experience a lot of problems with drivers and overall compatibility. Problem is now whenever I reconnect the OS X drive I cannot boot into the Windows drive, a new disk appears when I boot in start up manager (holding option) called "EFI boot". Selecting it gives me the following error:

Your PC needs to be repaired

The application or operating system couldn't be loaded because a required file is missing or contains errors.

File: \Windows\system32\winload.efi Error code: 0xc0000225

You'll need to use the recovery tools on your installation media. If you don't have any installation media (like a disc or >USB device), contact your system administrator or PC manufacturer

Press F8 for Startup Settings

And selecting the Windows partition shows a black screen with a flashing underscore. OS X works perfectly and I can boot to it, and when I remove it the "EFI boot" disk disappears and I can boot into Windows normally.

So what can I do so that I don't have open my device and disconnect the drive every time I want to boot into Windows? Any help or information will be appreciated. Mid-2012 13" Macbook Pro