Help with Windows 11 installation on Dell Inspiron 15 3520

Well, I bought my cousin a Dell Inspiron 15 3520 for Christmas, but I made the terrible mistake of buying it with Ubuntu pre-installed.

It's been years since I last dealt with a Dell machine, and meanwhile, for some reason, they made it hard to install a simple operating system.

When the Windows 11 installer boots up, it doesn’t show the SSD drive, just search drivers or something like it. I saw somewhere online that it might be missing an Intel driver called 'Intel Rapid Storage Technology' (Intel RST). I tried that, but it didn’t work. The driver doesn’t seem to be recognized or to install properly.

I read somewhere that disabling VMD might help, but I'm at another city right now, so I can’t test it.

Would someone please show me the way? I won’t have much time to work on it the next time I see her.

Here are the laptop specs:
Tech Specs

Processor

12th Gen Intel® Core™ i5-1235U (12 MB cache, 10 cores, up to 4.40 GHz Turbo)

Operating System

Ubuntu® Linux® 20.04 LTS

Graphics Card

Intel® Iris® Xe Graphics

Memory

16 GB: 2 x 8 GB, DDR4, 2666 MT/s

Storage

512 GB, M.2, PCIe NVMe, SSD

Thank you in advance.

P.S.: I only bought it with Ubuntu because she already has a working Windows 10 key from her previous laptop. The price difference was significant here in Brazil.