How to solve the problem "we could not create a new or find an existing partition when installing windows"?

Question

Windows

There is a 150 GB hard drive. I experimented in ubuntu in gparted, creating two partitions: one with ext4, the other with ntfs.
Then I decided to merge the partitions into one main one and set the ntfs file system.
Now I'm trying to install Windows and writes an error from the header.
I found a solution on this Windows site .
I tried to use diskpart, did everything as in the article, but without results.
Can you give me an idea,
thanks in advance

Answer 1

After so many dances with a tambourine, Windows began to install.