My 8 year old son's been playing Minecraft on Nintendo Switch and he wanted to get a Java version.  I just downloaded it to a desktop that has Windows 7 and this is happening.

Another issue I have is half of screen is kind of not loading.  Right half of buttons are not showing up.  Even the red screen with Mojang at the beginning.  It just says Moj. 

I don't know anything about Minecraft and my son is crying.

Please help!!!