Solid works Installation: Student version

Hi all. I am struggling to reinstall solid works 2020 on my system after my computer crashed. I have a Student license but it’s keep on telling me: that I have to reboot my system because a current installation is still busy or a previous version is already installed. Can someone please help me solve this problem?

Edu ​​​​​​​3DEXPERIENCE SOLIDWORKS ​​​​​​​Installation Issue ​​​​​​​