Weird fail issue

I have a Seagate 2tb st32000542as hdd. Was almost completely full. No clicks or anything and now it won't work. I cannot even get it recognized in the BIOS. I have tried plugging it into other machines and using an EZ-Dock system I have just to see the data long enough to grab it off and put elsewhere. The drive does spin up and as I said, no clicking. Just cannot see anything anywhere. Outside of trying to get it recognized in other machines, I have only done research on options. That said, I was hoping that asking this group would give me ideas on how to at the least, get the data (at least most of it) off of it. Any help is much appreciated.