SSD doesn't work anymore (after I tried upgrading it)

[feklee]

No Title

Photos of the first three times that I opened the machine. Afterwards, I put back in the original SSD, which – as mentioned – doesn’t work anymore as well. In fact, it is not detected after booting via USB.

 

[2informaticos]

You will need schematic and boardview of 820-3462 MLB.
Then need to measure around J4500 (SATA connector):

Look for power rails first, PP3V3_S0_SSD_FLT and PP5V_S0_HDD_FLT.

 

[feklee]

Thanks for your suggestions! I ordered a replacement cable now. Hope this does the trick.