Stop code: INACCESSIBLE BOOT DEVICE Error code: 0xc0000001. Does anyone know how to figure out this?

Trying to install Ubuntu 20.04 lts side by side with Windows 10, it required to change the Windows boot mode to AHCI. So I did those steps following given by https://discourse.ubuntu.com/t/ubuntu-installation-on-computers-with-intel-r-rst-enabled/15347?page=3.

"Start Registry Editor, and navigate to:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\iaStorV\

• Here, in the right column, double-click on the Start key, and change its value to 0.

• Next, double-click on the iaStorV entry in the left column to expand it, select the StartOverride entry, and then in the right column, change the value of the key 0 to 0.

• Repeat this set of changes for the following path in the Registry Editor:

HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\storahci\

Once this step is complete, reboot Windows and start your computer’s BIOS. Normally, BIOS is accessed by hitting the F2 or Del key during the early boot sequence. In the BIOS menu, change the hard disk controller type to AHCI. The exact terminology and steps required to access and manage controller type in BIOS often depend on the specific implementation by the platform vendor. Exit BIOS, and let the system boot. Windows should load normally, and you can check the controller mode in the Device Manager. It should read: Standard SATA AHCI Controller."

After that, I couldn't restart Windows. When I tried to reinitialize, appear a blue screen said: Stop code: INACCESSIBLE BOOT DEVICE Error code: 0xc0000001.

I would like to have my computer with Linux and Windows side by side.