[My pictures are converted to large size files 23GB each suddenly and can't be opened]

and what is the solution for my files?

[My pictures are converted to large size files 23GB each suddenly and can't be opened]

Hi,

 

Please help me

I have transferred pictures that I took from a camera (Canon, and from my mobile"Samsung") to my laptop, Microsoft surface with windows 10 operating system,

These photos were fine and opened smoothly, and each one is a few megabytes in size,

A few weeks later, I tried to back up my pictures and files on external hard drives; I was surprised that all my photos were of total 5 terabytes! And each one is 23 Gigabyte in length, and they can't be opened. I know this is a fake size as my storage in the laptop is a total of 1 TB, and the Kaspersky total security doesn't recognize any problem.

I am really worried as those pictures are very important to me

I hope you can find a solution to my problem as I am a researcher and if I lose those pictures, I lose lots of work for months!

Please help

 

Many thanks

Hassan