SSD keeps dissapearing while transfering large files

[nick_v15]

Iam trying to transfer or install from my hdd WD to my SSD Samsung 860 files or programs and sometimes one of them or both keep dissapearing after an error.What i have to do to reappear is physically disconnect and reconnet them.Any ideas?

 

[popatim]

Sounds like a controller (ie-motherboard) issue to me.

 

[nick_v15]

So what can i do?

 

[popatim]

Check the manufacturers sire for a newer Bios and updated drivers.