sure thing Domii123. Here is the answer in english :
That is really unfortunate Domii1123 since you cannot truly know if the windows license is retail or OEM as there have been multiple cases of OEM licenses being sold as retail.
You also needed the working windows to disassociate the license from previous hardware to add to new hardware.
You do have the option to install the windows on new hardware and use the troubleshooting menu to activate it since retail license are legally allowed to be activated even with a hardware change. So install windows on the new hardware and activate the key. Hopefully there will be no issues but if there are you will see an option saying "I changed hardware on this device recently," click on that and follow the steps listed to activate it.
I will be here in case you face issues.