Multiple partions but can only boot from one

I have three partitions on a machine. First on a hard drive are Windows 8 and Windows 7, and on an SSD Windows 7. I've lost the ability to boot from all three partitions and Windows install disks can't make a repair. I purchased Neosmart Recovery Essentials for Win7 and Win8 and can fix any of the three partitions with it. At that point I can boot only from the partition that recovery essentials has repaired. No amount of tinkering with EasyBCD allows the ability to boot from all 3 partitions on the machine. Ideas?