Can anyone help me on my DELL XPS 13 9260

The SSD is recognised in the BIOS, the BIOS is set to UEFI, but it's not recognised on the Disk Utility. I tried using the Ctlna... .kext but it's not working. The internal SSD is an 256GB Intel nVme. I tried anothe SSD, it was recognised in the BIOS but still not in Disk Utility. I got he i7 7'th gen ultra low voltage(if it helps). Thank you for the support.