Question Pc wont boot after changing ssds

[Chillax23]

I tried to change the intel ssd of my pc with a samsung ssd 860 evo and it wont boot even after going back to the intel ssd. I checked the ram and even changed it and it still wouldnt boot up. Need help please.

 

[CountMike]

I tried to change the intel ssd of my pc with a samsung ssd 860 evo and it wont boot even after going back to the intel ssd. I checked the ram and even changed it and it still wouldnt boot up. Need help please.

It won't boot o BIOS or OS?