To cleanly uninstall Minecraft you need to remove the entire
.minecraft folder. If you want to keep your worlds, move the
saves folder somewhere else before deleting the folder. You can always drop it back in once you reinstall Minecraft and run it once to re-create the
(The program you click isn't really Minecraft itself – it's just the launcher. You can get rid of it too if you want, but deleting it or not is separate from uninstalling Minecraft itself. It doesn't keep any settings or matter much, since it's just a convenience for launching the actual Minecraft program, which is stored in
.minecraft. In fact, if you know how, you can start Minecraft without it entirely.)
In particular, I think your texture pack options are causing the crash. I've had that happen before, with an old texture pack crashing the game after I updated it.
I suspect that because, from your other question, it sounds like you were trying to use a 128x texture pack and it was crashing it. By choosing it, that choice is saved in your
options.txt file in your
.minecraft folder – deleting
resources will leave that intact! This option is probably what's crashing Minecraft. (Texture packs that are incompatible with the current version of Minecraft, or which are too large for your computer to handle well, can sometimes crash Minecraft.)
To fix it, open
options.txt (using a text editor) and find the line that begins with
skin:. It should say "spahx" or something like that. Change the line to:
And then run Minecraft. It should work now, no un/re-install needed.