Error with SEPM Java console

Hi and Happy New Year,

As a Christmas present to my laptop I desided to rebuild it as the system performance was very poor. I attempted to install the SEPM console using the address; https://servername:9090

Everything appeared to install correctly, however I'm now in a situation where I can not uninstall and therefore re-install the SEPM console as the following error message appears;

I have even completely uninstalled and re-installed Java but receive the same outcome.

I can, of course, access my SEPM via a web browser but would like a solution/

Thanks