Advanced danger stripes problem

Please answer the following in a systematic fashion.   Not doubting your thoroughness or level of expertise, just seen way too many posts here where people cherrypick the questions they decide to answer which can make troubleshooting near impossible...  

Does the camera original complete when you open it in quicktime player?  what happens if you reimport the clip into premiere?  Is it complete?  Are both computers running the same OS?  What codec (compressor) is the camera original?   and does the frame rate match that of the sequence?   Wondering if there's something wonky in the file allocation table at the OS level. But, I'd backup the drive using something like carboncopycloner before doing any of the following..Might try running diskutility:  first aid on the drive...  If you have DiskWarrior running that might help.  It's saved my life a few times...    Sounds like you probably shot this.  ALWAYS a good idea to backup your media as every drive (even an ssd) will fail... it's not a question of "if" its of "when"

What happens if you transcode to a different codec like a robust format like prores (HQ)?  You should be able to unlink from the original file and relink to the transcoded file...    And just remembering that I recently saw this problem on a 2 camera shoot a few months ago where the camera original was .mxf...  Things got wonky on one clip on one camera.  I transcoded that clip to prores and relinked to it and all was well... even the multicamera material..

This is the kind of problem I can usually figure out how to workaround...  (not bragging, ok, maybe a little bit, but been doing this since the early days of NLE on Avid, FCP1-7...). If by somechance you're in the New York City area, happy for you to drop by the edit room with your macbookpro...  and if not, maybe a zoom session...  You can send me a message directly by clicking on my username at the beginning of any of my posts...    

FAQ: What do I do when I see diagonal lines on clips