Has minecraft ever messed up anyone's computer?

Answer 1

Yes. When my sister plays it, my computer thinks im always holding the "ctrl" key. so pressing "P" alone would open the print window and "T" would open a new tab etc.

Answer 2

No. Well yes, but only if you run out of data, get minecraft crashed( don't worry. It only happens sometimes) or you use a large amount of TNT.

Answer 3

It depends on the size of your RAM. If your RAM is small then Minecraft might slow down your computer. But if your RAM is large then you should be fine.