If you can't in game get things fixed this is how the hard way. edit cvars.xml on those specific functions, put "unused!unused" quotation should be in that aswell you'll see how it's structured when you open the file but make sure you keep it correct. I'll help ya here, just copy/paste over your string value make sure before you save it no duplicate functions of these might confuse the game. at destop press windows key+r paste this in. Where it says USERNAME put your account name on your pc "C:\Users\USERNAME\AppData\Roaming\Bungie\DestinyPC\prefs" once in there open up the cvar file, if you can see file extension one you wanna tweak is .xml Open it with notepad or wordpad either will be fine. Though I recommend notepad (I use notepad++ but you don't need it for this) Don't get curious screw with other settings just go for what I'm putting here anything other than keybindings deserve a different thread lol. this is the auto melee where it decides guessing you want to use that? If so don't touch it. <cvar name="melee" For these are the 2 you want to reset. Should be located at the end of <namespace name="key bindings"> <cvar name="melee_uncharged" value="unused!unused" /> <cvar name="melee_charged" value="unused!unused" /> make it look like that save and exit start up game you should be fine

Whats wrong with those 2 keys? are they blank, will they not change? you have an option in the menu to reset keybinds to default.