Question Boot issues with cloned M.2 - can't connect any other hard drive to get it to boot.

[Alundblade]

So tonight I picked up a M.2 EVO 970 Pro Plus and used Samsung's Data migration tool to completely clone my Evo 850 SSD. I unplugged all my hard drives and booted up to my new M.2 and it's fast as hell! Only problem is, that whenever I plug any of my old hard drives in (I have 3) I get an error message on boot and can't seem to get past it. So my only options at this point are to either use my M.2 with no other hard drives or plug all my other drives in and boot normally off the original SSD. I'd like to be able to erase my old C drive and use this as my primary and have all my drives connected. I have a feeling that there's an MBR issue, but I can't seem to figure out how to fix it. I looked around at bunch of different threads, but can't seem to figure this out. Any help would be appreciated!

Error code page says the following:

RECOVERY

Your PC/Device needs to be repaired

The boot configuration data for your PC is missing or contains errors

Error Code: 0x000000e"


On the bottom it says to hit enter to try again or F8 for repair options, none of which do anything

 

[alexoiu]

"Only problem is, that whenever I plug any of my old hard drives in"
Are you changing the boot options in BIOS, so that the SSD would still be the 1st boot drive?