First, Yes I have checked with other similar questions but havn't found one that could help me with my problem.
I got a LG Nexus 4 running Android 4.2.2 and when I connect it to my Windows 7 64-bit PC to transfer some music files to it, the device doesn't appear in Windows file explorer. I have a little USB symbol down in the activity bar and when I click on it it just has one option "Eject Nexus 4" (and some other for my remote and stuff).
Anyone know how to solve this? (If I forgot to mention some information just ask),