I didn't uninstall older GPU drivers, and installed new drivers right away instead

I did this and then remembered that I had to uninstall GPU drivers first. I went to double check and sure enough I was supposed to uninstall old drivers first.

So, is this really harmful to my computer? Or can I fix this issue pretty easily? What do I do from here? Do I simply go and uninstall the drivers and then reinstall the latest drivers and that will work things out?

I'm a bit worried this problem won't be real easy to fix. : -\

I'm kind of new to PC gaming and before getting this PC I have now, on my old PC I never updated GPU drivers (I didn't game on it).