Weird opening screen with multiple languages

No, it's a sign of a kernel panic or a hardware failure. It isn't a virus.

About "You need to restart your computer" (kernel panic) messages

Understanding and Debugging Kernel Panics,

Don’t Panic! Understanding & Troubleshooting Kernel Panics in macOS

How to fix kernel panics after installing OS X updates | MacIssues

You should read Mac OS X- How to log a kernel panic to see if there is a new log entry you can copy and paste here for use to see. Of course, this requires rebooting the computer. If you are unable to do that then make an appointment at the Apple Genius Bar for service. If you need to find an Apple Store - Find a Store - Apple.

Hello heatherfrombridgewater,

That sounds like a standard Mac installation/setup screen. Apple likes the multi-lingual "hello", especially scrolling in the background.

I am curious about why you would see that "all of the sudden". Did you perform some kind of update?

It is definitely not a virus.

In that case, it sounds like Kappy was correct. It was a kernel panic. Please follow Kappy's instructions and post the contents of the panic report here. It could indicate a hardware problem. If your machine is still under warranty, you want to know that sooner rather than later.

Yes, the multi-lingual screen may scroll. I've seen it do so once or twice. The screen isn't an announcement of a kernel panic but that the computer has failed for an unknown reason. Need to restart it. If the same screen persists then likely there has been a major hardware failure. But the misstart may also be the result of a kernel panic. However, the panic may not make it to the log.

A kernel panic doesn't scroll though. I seem to recall some installation setup screens doing something like that. I usually don't pay attention to those things though.