Why does Power Point stop saving a file over time?

Question

PowerPoint

The essence of the problem:
I am creating a presentation, the first 10-12 slides are saved normally, but suddenly the file is locked for writing and cannot be saved, the error "An error occurred while saving the file."
So, as he advises, "create a new copy" does not work either, the same error. What could be the problem?
Tested on Office 2013 and Office 2010 and it's the same there and there
.

Answer 1

Problem solved. There is something wrong with the drive I'm saving to.