I was asked what the library equivalent was of our help desk’s standard “try turning it off and back on” advice. I’m not sure there’s an equivalent, but “try a different browser” comes close.
A not infrequent problem is that certain sites and databases don’t display properly (or sometimes at all) on a given browser. If you find that a web page or online document isn’t displaying properly and you can’t figure why, try looking at it with a different browser. Some vendors design their databases to work with a specific browser. (In one case, I was assured by a vendor that “all lawyers use Internet Explorer” so there wasn’t a problem.)
And with regards to the “try turning it off and back on” advice, a bonus tip: always make sure you’ve saved everything first.