A (longish) time ago, back before 1.10, I could see the coordinates, block ID, and biome from my Minecraft's F3 debug screen.
And then the malware came. I ended up reverting to a backup three times to delete it. (Sometime after that fiasco, I tried getting on a heavily modded server, the downloading of the proper mods and Forge seemingly being the cause of the second problem).
My problem is now twofold. The only way I can open Minecraft is through the launcher.jar file (Minecraft.exe, Feed the Beast, and TechnicLauncher do not open anything. Ever since I went on that server that one time, I am now no longer able to see my coordinates or the block I'm looking at.
How do I fix this? Should I uninstall? (How do I uninstall? I'd need to remove every file related to Minecraft from my computer).
I would love to know what block I'm standing on again, and what block I'm mining. After all, surprise Silverfish are a horrible fate…
Best Answer
Just rename your .minecraft folder to something else, anything will work, and redownload the installer from the minecraft.net website. This should reinstall the game.
All of your worlds/servers/mods are in the .minecraft folder you renamed and can be easily copied to the new one.