so I've been using movie maker for a while and never really had any major issue until today

I have uploaded a video onto movie maker and it has processed through but when i want to watch it to start editing it all i see is a blank screen, the audio is working fine i just can't see anything.

i have uploaded to other clips and they're working fine 

I've tried deleting it and re uploading it onto movie maker, I've even deleted it off the computer then re uploaded it that way but nothing seems to be working

HELP! i need this edited by Thursday