HA does not start from SSD

Hi, I do have a dual core laptop where I installed HA with balena etcher on a 128Gb SSD from another desktop with success. In the Bios of the laptop I enabled UEFI and disabled secure boot as recommended. After connecting the SSD to the laptop it went directly to the BIOS without any notifcation. No boot activites visible. SSD is not accessible by a windows PC, is this correct? Tried to redo the sequence with balena etcher but SSD can’t be found by the windows PC anymore.
No idea what to do.

Tested it on 2 other Laptops. Only on the newest one the SSD was able to boot and HA OS started. Installation is Not as easy as originally thought.