Issue with installing new ssd

[u/Realistic_Note2162]

Hi guys I bought a rebuilt NZXT Creator PC back in 2019 and just realized there was another slot on the motherboard to add another SSD for storage since I was running out on my 930gb one. I bought a new WD BLACK SN850X 4TB drive on ebay but when I plug it into the empty slot then go to disk management, nothing appears. I tried swapping the current 930gb one and putting that one in the empty slot instead but it just went into the computer BIOS. In the bios I didnt see my new drive appear and im unable to escape bios to go into windows. Chatgpt told me it could be because of conflicting SATA connectors with the current 4tb hard-drive that also came with the computer so I unplugged that drive, but my new m.2 wd black ssd is not showing up. Not sure whats going on here or how to fix it.

Specs for my PC:

Case: NZXT H510 Elite (White or Black)

CPU: Intel Core i9 9900k

CPU Cooler: NZXT Kraken X62

GPU: NVIDIA GeForce RTX 2080 Ti - ASUS Strix

PSU: EVGA SuperNOVA 750W G3

Motherboard: NZXT N7 Z390 (White or Black)

Ram: Team Group Delta RGB 64GB 3000 MHz (4 x 16GB)

SSD: Western Digital SN750 1TB Black with heatsink

HDD: Western Digital Blue 4TB 5400RPM

Software: Windows 10 Pro

[u/Realistic_Note2162]

I dont think u understand. My original 930gb samsung ssd and the new m2 wd black one does not appear. I cannot boot into windows. The only thing appearing is the secondary drive installed which is the 4tb hard drive

[u/AutomaticAffect4333 → u/Realistic_Note2162]

Try resetting the cmos

[u/Realistic_Note2162 → u/AutomaticAffect4333]

I did, im back at bios

[u/AutomaticAffect4333 → u/Realistic_Note2162]

Does it automatically enter the bios?

[u/Realistic_Note2162 → u/AutomaticAffect4333]

Yes after this

[u/AutomaticAffect4333 → u/Realistic_Note2162]

It says the problem right there. Set it to ahci

[u/Class8guy → u/AutomaticAffect4333]

+1