I am having some serious issues trying to copy anything to the 'internal storage' on my nexus. I have searched for solution with no fix yet. I originally tried to copy all my pictures to the dcim folder so all the new pictures I take would be in the same folder as the ones I took on my DX. Then I read that we might not be able to copy to that folder, so I tried to copy them to the folder labeled 'Pictures', still a no go. Then I read where I should try to delete the pictures folder or add a folder to the internal storage. I was able to delete the folder, but then I could not add a new folder (which was weird to me). After restarting my computer I was able to add a folder, but then couldn't copy any files to it. I am also not able copy anything to any folder, I have a few .apks I would like to add, but can't get those to copy either. I just don't know what I am doing wrong. Almost every time I try to copy files over windows explorer stops working on my PC. I have seen other threads and followed their suggestions, but the fixes seem to be hit or miss.
I don't think this is a driver issue either, as I have already unlocked the bootloader and rooted the phone. Any suggestions would be greatly appreciated. My PC is a Win7 32 bit.