Dumica

Yeah, it's weird, but, at least it works and that's all it matters for me. 😅

Great, happy to hear that! I'm curious, is it on UEFI or legacy mode? You can check that by following the (easy) steps from this link: https://www.tenforums.com/tutorials/85195-check-if-windows-10-using-uefi-legacy-bios.html Just following "option 1" is fine.

It is on UEFI?! Then I don't know what the issue was, but that's great! (UEFI is "better")

Yes, I understand you completely mate. Luckily, I did not have any issues with it by far so I'm good.
 
We all miss Windows 7.

It's working! Booting into the SSD without a problem now! Thank you very much!

It could be that the laptop's bios is legacy (instead of UEFI), and that the SSDs OS is UEFI, which means it wouldn't work. If you try to use a USB drive or a DVD to install Windows, does that get you anywhere?

That's true, but sometimes you have other hardware that doesn't immediately support one or the other (I've had that happen with my GPU recently).
 
That's a good sign.

it is possible with Niresh osx you could give that a try I don't say it will work tho.

IMO that's a silly suggestion. Windows 8 will be dropped from support in under 2 years. Still leaving the OP with the same issue then.
 
To get into the BIOS, open Settings, then select General. Under Advanced Startup, click on Restart Now. This will restart your computer into the boot menu. From there select BIOS.