I don't understand it. Formatting a drive and make it bootable make no sense if you won't install an OS onto it.

The OP originally said he was TRYING to install and it wasn't working. In his response to you he said formatting and making it bootable didn't make a difference. That suggests he tried the install again after doing what you asked.

A couple of us have suggested the issue is trying to install Windows after installing Linux and that he should instead blow it away and install Windows first then Linux. Have you gotten it to work installing Windows after Linux?

the problem what I found is: there was no partition containing windows (NTFS). Therefore windows either was not installed at all or was deleted/overwritten (or was installed on another drive probably).
It does not depend on the order (just in case you install it onto the same partition).
Yes, you can install windows after linux, but in that case you need to restore grub - and also you can add linux to the bootloader of windows - all are difficult tasks, so better to install windows first.

Again that is the OP's originally reported issue. When he tried to install Windows it failed.

In response to you suggesting it the OP had responded:
My response to you was because it appeared you were chiding the OP for not installing Windows when in fact the entire point of his original post was that Windows installation was failing. It sometimes help to read an entire thread before answering.

Anyway thanks for adding the additional info:
That at least gives the OP another option to try if he has a high tolerance for pain.

Your parted output posted above shows you are using the older MBR install so you won't need UEFI as a windows UEFI install requires gpt partitioning and you don't have it. I'm not sure about windows 7 but 8 and 10 have a custom install option to select the partition and drive so it wouldn't matter if you have another OS already installed. It will of course, overwrite your current bootloader and will not ask or inform you of this. I think you would have better luck with your attempts to install windows 7 at a windows forum or microsoft site as the fact that there is another OS installed is not really related.