Failed to initialize Unity Graphics?

I don’t even know what’s going on… I just downloaded Unity and when I tried to open it… well… it said “Fatal Error! Failed to initialize Unity graphics!”
What does this mean and how can I get to actually USE Unity without it bugging/crashing all over te place?

PS- I have absolutely no idea what a Video card is or what Chrome is…

I know this is an old one, but just in case anyone is looking for a solution:
If Unity used to work for you and you just gor this error, try restarting your computer. That did the trick for me.