my Seagate Desktop SSHD (PSB replacement)

I found you on YouTube.  I would like some help to recover my data. I try this drive in another computer. I try it in a external SATA reader.  I hear nothing no power.  I believe I need a new psu for drive

Question if I remove the PCB and send it to you, can you fix it and then return it back and I place it back on my drive and it should work hopefully

ST4000DX001 Seagate PCB 100714259 is your donor PCB.

When you get this PCB, you need to move your original PCB’s BIOS to the replacement PCB. The 8pins (4 pins on each sides) with 25P05VP、25P10VP、25F512、25F1024、25F1024AN、SST25VF512、SST25VF010, etc. are the BIOS.

So if I replace this on my hard drive would it work.   I saw I needed to do something with bios chip

Yes, the BIOS needs to be changed.