It seems to me that if you -can- get running from your BootCamp partition, that the drive itself is physically ok -- no hardware problems. If the drive had hardware failure, you wouldn't be able to boot from ANY partition (Mac OS, BootCamp, or recovery partition).
I will guess that your real problem is an "OS problem" on "the Mac side" that keeps it from booting.
Just because you can't boot from a drive, doesn't mean the drive "is bad". What it really means (until you KNOW the drive is bad) is that you have a drive that you can't boot from (well, hey...!). If you can boot from another source, you may still be able to access your files on it.
A situation like yours is why I -ALWAYS- advise here that one should keep a fully-bootable external drive "within arm's reach", for moments just like this.
Do you have an external hard drive that you can use, or a USB flashdrive?
You should see about putting a fresh copy of the OS onto an external source, and then see if you can get started up that way.