Question My PC is not using my storage device and I can't access Windows, help?

[FiddleRafi]

Title.

My pc has been booting straight to bios recently and I thought it was probably because my pc wasn't using one of my storage devices. Turns out they both work but only one can be used at a a time(?). Both work fine but only one can be recognised and used at a time. Whenever I use one, my pc tells me to plug in the other one and when I only use the other it says 'undoing changes made to your pc' and then goes straight to BIOS.

I'm desperate for some help. Anyone?

IMAGES:
https://ibb.co/3F6CWBC

20190319-203842 hosted at ImgBB

Image 20190319-203842 hosted in ImgBB

ibb.co

It seems it recognises them but doesn't want to use both at the same time.

https://ibb.co/9bK92f8

 

[FiddleRafi]

It should be said that I have a faulty 2080ti plugged in. Could this be part of the reason? Should I try swap my psu?

 

[EyyMunchian]

A faulty GPU shouldn't do that...although it could.

Download a program called CrystalDiskInfo:

CrystalDiskInfo

About CrystalDiskInfo A HDD/SSD utility software which supports a part of USB, Intel RAID and NVMe. Aoi Edition Standard Edition Shizuku Edition Kurei Kei Edition Download System Requirements OS Windows XP/Vista/7/8/8.1/10/11Windows Server 2003/2008/2012/2016/2019/2022 Architecture x86/x64/ARM64...

crystalmark.info

Have both drives plugged in, run a check, if crystal disk finds both drives then it may be a windows issue. If not then it could be a variety of faulty hardware ranging from a bad MOBO to psu hdd power cables.

Oh and I guess this should be said too in case its a "oh duuuh" moment.
You can only boot using 1 Drive, you can access the other drive via file explorer but you can't boot both devices at once.
Host drive + the Mass storage drive is how most people use 2 drives. 1 is typically an SSD for Windows while the other is a
large HDD for games and programs.