I have a Fit-PC3 with a Phoenix BIOS (Securecore Tiano v2.1), and when I turn it on with a Samsung 3TB USB external hard drive (similar to this) plugged in, it freezes on the BIOS screen (I am unable to press F2 to enter the BIOS setup).
When I unplug the drive, it boots fine. I can then plug in the drive later, and it works perfectly.
The drive has its own power supply plugged in to the mains.
I have changed the boot order in the BIOS, so my internal HD is listed first, and the external HD is listed second, and marked as disabled (there is an "!" next to it).
I have turned off UEFI boot and turned on Legacy mode.
I have overwritten the master boot record on the drive with zeroes using
I have tried plugging it into different USB ports.
The results are the same if I plug in the hard drive via a USB hub but when plugged in to another PC (ASUS BIOS) that PC boots fine.
Any ideas how to get it to boot?