every couple of minutes my storage get down in size for no reason

[d2idan]

I have a new dell latitude E4750 I upgraded to windows 10, and I've noticed that every couple of minutes the samsung SSD I got with the laptop is get down is size .

2 minutes ago it was 166 GB 1 minute ago it was 165 GB and now its 164 GB.
edit: now it's 163 GB
second edit : now after 4 minutes it's 162 GB
last edit so you will see how fast the space goes down - now it's 160 GB.


why it's happening ?

note: I used disk cleanup and also uses CCleaner

 

[Gate9er]

Maybe a virus. I would suggest recovering or even reformating your SSD and reinstalling windows, just to eliminate the possibility of software issues.

 

[d2idan]

so I looked at the system restore files. they got bigger every 5 minutes in 1 GB of storage.

so I disabled system restore and that seems to solve my problem.

buy why system restore files gets bigger in 1 GB every 5 minutes ?