Wrong Boot drive

I ordered the recoil 2 and requested that the Samsung 970 pro M.2 ssd be the boot drive and they set the Wetsern digital ssd 2.5 as the boot drive. I used macrium reflect to clone disk and transfer boot data across. I then entered bios and couldn't see the M.2 ssd as an option. I saw an option that had PCIe in it so I changed that to number 1 priority but didn't seem to boot quicker. When booting it said checking media twice and then no media found but the laptop still started up. When I check both drives the WD ssd still had the windows logo on it making me think it's still the boot drive and the Samsung drive doesn't have this. What do I have to do in order to change the Samsung ssd as my boot drive? I have already looked at YouTube videos but PC specialist bios looks different and I could not find a video on they're bios. Need help please will be much apperiactited.

I'd suggest giving them a call. They are open to 8pm today

It's also worth, politely but clearly, underlining that they seem to have made a strange mistake here.

I agree with Oussebon. If you asked for Windows to be installed to the Samsung and PCS didn't do that then I would contact PCS as soon as possible.