Question HDD not functioning after installing SSD.

[Small-Town-on-Pluto]

Good morning/night,

Im hoping you could please offer some guidance!


Today I installed a "Crucial P3 1TB PCIe Gen3 3D NAND NVMe M.2 SSD" and it is working fine. However, after installing the new ssd, my pre-installed 1tb hard drive stopped being recognized by windows, and i can no longer access it. It won't show up in device manager or disk manager any more. Replugging the drive's cables hasn't made any progress either.

Specs:
OS SSD - Western Digital WDS100T2B0C-00PXH0 1TB M.2 2280 NVMe SSD
LARGE HARD DRIVE - st4000dm004-2cv104
MOTHERBOARD - B450 AORUS PRO WIFI​

 

[helpstar]

are both connectors tightly connected to the hdd ? power and data cable
still connected to the motherboard?

try a different sata slot and data cable

does it show up in bios?
does it spin on?

reset bios by jumper

 

[KingLoki]

Have you tried plugging it into a different sata port?
Also try a third party disk management tool, like aaomi or minitool etc. after a reboot. Is it mbr or gpt drive?
Pls supply a screenshot of disk management screen after reboot.
If you still have a no show, can you disconnect the M.2 drive and boot from the original to check if its actually damaged. Cheers