MATLAB 2021 downloading all tools completed but not installing.

I downloaded MATLAB R2021a (academic) Licence file from MATLAB official account. I started installation with 50 tools out of total 102 tools (27.8GB). Downloading of tools completed properly & started to installing each tool one by one. When it completed 70% it freezes for 2-3 hours & then shut down my laptop atomatically without completing the process. Now What should I do ??

Does it need to be reinstall again ? can I go to installation process directly ? Please help me out.