...
In BIOS boot from the USB flash drive from the save & exit menu
When Windows installer boots select language and keyboard layout
Click on install now
If you have a product key type it and click next, if you dont click I don’t have a product key (you will be able to activate later)
Select which windows you want to install (your list can be different)
Accept licence agreement
Choose custom installation
In this case there is only one drive, and its not empty.
We need to clean it before we can install windows on it, we can see all 4 partitions belong to the same drive. (drive 0)
For each partition, click on it, and click on delete, to free the space of this partition after which, this partition will be displayed as Unallocated space.
In the end you want something like this:
...