Broken Windows 7 Boot

For the past few months my Windows 7 has had an annoying problem when booting up. For reference I'm running Windows 7 Ultimate x64 as my primarily used OS, which is setup to dual boot with Windows 8.1 x64 which I use occasionally. Actually I think the problem started happening around when I setup the dual boot so I suspect it may be related. Which makes no sense to me because I've setup dual boot systems several times before that always worked flawlessly but this is the first time I've tried to dual boot 7 with 8.1 in particular so maybe the OSs hate eachother or something. Anyway on to the problem.

So every time I try to boot into Windows 7, the following happens: OS doesn't even try to start up until I've physically turned the PC off and back on like 2-4 times. No errors or anything that I see. Then finally it will try to launch Windows startup repair and I can tell it to try to repair it, which can run for a long time. Eventually the startup repair will say something like "windows could not be repaired" upon which I reboot the PC but regardless, Windows 7 will load up perfectly that time. Works fine until I reboot again, which starts the process over. Windows 8.1 does not have this problem at all.

I've checked my event logs, I haven't noticed anything that obviously stands out to me around boot time, there's no hardware errors either which wouldn't make sense anyway because I just built this PC was last year with all brand new parts. I can't figure out what would be causing this, nor how to go about fixing it. The boot problem is the only thing obviously wrong with my system, from what I can tell it's just a severe annoyance if anything but I would really appreciate some help with figuring out how to fix it so I don't have to waste so much time trying to get my PC started up when I need to.

Please post back a screenshot of Disk Management - Post a Screen Capture Image

ok.

I notice the OS you're using for screenshot Windows 7 on C is being booted by it's own System Reserved partition on the same DISK2. This is signified by C showing the Boot flag meaning it is the presently booted OS, while it's System Reserved is marked System which means it is booting that OS.

What we can't see yet is which System Reserved partition is booting Windows 8. So reboot into Windows 8 and provide another screenshot please.

If Windows 8 is also being booted by the System Reserved partition on DISK2 it will be marked System in Windows 8 too. This means Windows 8 is no longer being booted by its own System Reserved partition and it should not be marked Active as that will interfere with the boot.

The cleanest arrangement for separate hard drives is for each disk to boot itself, then set the preferred OS hard drive first to boot in BIOS, trigger the other one using the one-time BIOS Boot menu key. If this is not to your liking, install EasyBCD to the primary to add the other OS to a Windows Dual Boot menu. We can give you the steps to do this as we've done thousands of times before.

Here is disk management from windows 8. Also I already have a dual boot menu set up, with windows 7 set as the default OS. I'd prefer to leave it that way if possible. I used easybcd to set up the dual boot.

Both OS's are being booted by the Windows 7 System Reserved partition on DISK0, which we know because it remains flagged as System partition no matter which is booted.

This means the Windows 8 System Rserved partition on Disk 2 is no longer being used, yet it has an Active flag which means it could well be interfering with boot.

So try marking the System Reserved partition on Disk 2 Inactive to see if that helps: Partition - Mark as Inactive - Windows 7 Forums

If you ever remove Windows 7 you may need to mark Windows 8 partition Active again and even possibly need to run Windows 8 Automatic Repair