Student Solidworks Reinstallation

Hello everyone .

My son having installed an ssd on the PC:

I had asked a question about the reinstallation of Solidworks student on an ssd a few days after installing the same Solidworks on a hard drive.

I don't find my question here.

So I "gave it a shot".

Everything is going well since I have the serial numbers. 

But, when choosing the installation location,  despite a deep cleaning of the partition, I still get the message:

The download folder between selected or its parent contains files from a different version of SOLIDWORKS 2018 SP05 than the one you are installing (SOLIDWORKS 2019 SP02) Select a different folder.

I searched for answers without success. 

I have done hours of handling and cleaning but the message keeps coming back. I can no longer install Solidworks.

How to do it?

Thank you