RStudio Fails to Run After Installing New Fonts

I installed some 2000+ fonts yesterday, only to find my RStudio won't run after turning my PC back on this morning. This is happening on my Dell XPS 13 9340 (Windows). Previously had a similar experience on my HP Elitebook 840 G6 with no success fixing it but this time, I could link the problem to an identifiable change on the PC. I will really like to keep the fonts and would appreciate any suggestion how this could possibly be fixed before I go on to remove the fonts installed. Thanks.

What happens when you attempt to start RStudio? Also, if you run the RStudio executable from a command prompt, do you see any error messages?