Can't find hard disk to install

I’m trying to install Fydeos on my PC.
My pc spec:
Ram: 8GB
Graphic: Radeon HD 7990 1GB
CPU: amd athlon 64 x2 4600+

When I’m trying to install Fydeos, I can’t find my hard disk and both hard disk are converted to GPT.

What should I do now?

What brand of PC? Currently dell is shipping all its laptops and 2in1 tablet setups with the storage controller configured for Raid interface not Achi/Nvme. This keeps default windows, and i’m guessing other OS installers from finding the default ssd storage device.

The pc is old. you see the processor? is 2008 Model. In that time dont exist nvme\AHCI options. For that, this laptop is not compatible with FydeOs in last version. I recommended for this pc Linux Mint or similar

there are reports mentioning you need to enable “AHCI” in BIOS settings for it to work: