Blank Screen when Clicking on an Account Name - Only in UAT and Sandbox - NOT Production - and only on my PC

So all of a sudden today, when I click onto any account name in the Accounts Module Overview screen - I just get a blank page.

This happens in UAT and Sandbox but not in Production

This happens no matter what Username i log in as - and if I log in as My username on another machine I do not experience the issue.

I normally use Chrome - I did hard refresh and clear cache - no change

I tried using Microsoft Edge - which has never previously been used on my PC and no change

My IT Manager logged in to my machine remotely and loaded up an entirely different Windows Account - and no change

Before we try wiping the entire PC and starting with a fresh Build - has anyone else every experienced this issue - and do you know how to fix it?

I can use every other module completely normally in UAT and Sandbox, I can use Production login normally in Accounts as well as everywhere else. I can't think of anything else to try...

We are using Sugar Enterprise 9.0.1

Regards

Adam Ososki

Very Perplexed...