Had a lot of problems when I installed 3.5"-2.5" adapter in mine
A1200 , so much so I made a small hole for cable to go through and
made some mounters to keep it in place.
If it got even slightly loose then black screens , reboots , all sort of
strange things.Adapter was just a little too big to fit right and it seemed
to me that once I removed it Amiga stayed in state of shock for a short
period of time :confused:
If it worked before FastATA let it rest then try without it and go from there.