Question My SamSung EVO 970 250GB Won't boot

Jun 13, 2019
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When I try to boot on it, it just comes up with text along the lines of "please reboot with a boot drive installed", I have tried replacing the SSD but it still won't work, I was wondering if you could help me!
 
Jun 13, 2019
2
0
10
new or existing setup?
full system spec?
CPU: I5 9600K
CPU Cooler: MasterLiquid ML240L RGB (With LOW PROFILE Dual Chamber design)
MoBo: Asus PRIME Z390-A
SSD: Samsung EVO 970 Plus 250gb
GPU: GTX 1050TI
RAM: Corsair VENGENCE DDR4 2666Mhz
Power Supply: EVGA 750W 80+ GOLD Semi-Modular
HDD: 1TB Bootable WD Hard Drive, 500GB Non-bootable 500GB WD Hard Drive.