I own a Sony Lap Top (PCG-81114L). I've been using Adobe Premiere Pro as my editing software. Currently there is 245 of 456GB of space on my c-drive. All my video DSLR files I keep in an external hard drive. Recently, when I have been attempting to edit, Premiere Pro will not display the video. It will appear as a still frame but the audio will still play. Sometimes that audio will studder as well. I have not had this problem in the past. Am I simply maxing out the limits of this computer or is something else going on?