Windows's installation failed

[Palome]

( Sorry for my bad English i'm french )

 

So i tried reinstalling Windows ( Uninstalling the proprietary one from Acer and installing a new one ) but the installation went wrong. I'm using a Nitro AN515-51 with the installer on a 64 GIBs key and want to install Windows 10 on the 120 GIBs SSD. I put the key with the windows installer ( from the media creation tool from another windows machine ) onto my PC, i select the language and the partition and want to install it on ( I've format the whole disk and there's only one empty partition ). Then i got a error saying approximately  :

Quote

Windows's installation failed, please relaunch the installer

I relaunch it and see that i have now 2 more partitions a system one and a MSR ( reserved ) one, i still have my 120 GIBs partition but now it's not empty and it's a principal / main partition. I delete it, and restart the installation, everything works well ,and the ends of the installation i got the same error message than the last one. I restart the installer for the second time and when i try to delete the partition, i see that the button is greyed and when i click install it says :

Quote

There is already a  full Windows installation in this partition. If you try to reinstall Windows the files of the previous installation will be put in the "windows.old" folder.

But the problem is that the installation button is also greyed.

 

I already tried Diskpart, Rufus and Ventoy with ISO files, with MBR or GPT partition style. I don't know what to do, so if one of you have an idea please say it to me. ( btw i'm using UEFI )