Flashing question mark folder drives have been swapped

Hi there thank you for taking the time to read this. Spookily within days of each other 2 friends MBP's have succumbed to the flashing question mark folder upon booting. The first we swapped the drive out ran internet recovery saved what we could from the old HD and away we went.
Oddly when getting into disc utility Macintosh HD didn't exist only a tiny 1.53Gb partition called Disk0 which I assume is the recovery program????
However I have just took it apart and assumed by popping my healthy HD from my MBP into the faulty one it would boot as my Mac and troubleshoot a faulty HD
Am I wrong in thinking this, does my Mac having a Beta version of OSX affect this or do you think we are looking at a larger problem.
Many thaks
Gareth

Sort of a bump of kinds
Had various drives in and the Mac doesn't see it however plug same drives into a SATA USB adaptor and OS sees the drive. Have tried replacing the hard drive to logic board cable with same results?
Im assuming at this point the board has gone belly up. Although hardware test is report zero issues there is no startup chime and the machine refuses to recognise any discs connected in the expected manner
As always any thoughts/advise is welcome
Gareth

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  • Flashing Question Mark Folder on Start-up

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  • Flashing Question mark Folder and clicking - no start up.

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