#1
I have a Gibson Robot Les Paul, and this didn't happen when i first got it but now I've noticed the strings all vibrate against the 1st fret and i can't seem to fix it. I've been raising the string height but it seems they still are making contact with the 1st fret when played open. Does anyone have any idea how i might fix this?
#2
the robot les paul can fix this for you. . . durr

Get out your manual and go to the section on setup and intonation. . . . . .

If there isn't a section on truss rods there, take it to a local luthier. It is almost certainly the truss rod is not set correctly, or else changing the string height would fix it.
Do NOT look behind you.