Is it trying to install something on the pc? Maybe just let it install it and it won't do it again, if that's the issue. My T-Mobile G2 asked to install LG stuff when I first connected it and after the 3rd time I let it install and that was that but the LG programs are helpful at least.
LG Optimus G (Sold) Galaxy S4 (Buyer's remorse) HTC ONE (Buyer's remorse) LG G2 (Loved it for a week) Note 3 (Couldn't help myself) T-Mobile
My Note 3 is powered by Darthstalker Rom and LeanKernel (Happy Happy Joy Joy!) 38,378 Antutu