System and reserved files use 70GB. How delete them?

Hello! Can any one help me. I was checking my storage on pc and find out that almost all GB are are used by system and reserved files, and it is more than 70GB.
How can I delete these files?

Thanks

topgundcp said:

Would be better if you post a screen shot of Disk Management: Win+X-> Disk Management

My "System and reserved" (Windows 10 Pro, started with a clean installation, I've since installed 5.51 GB of applications) is 16.7 GB.

Do you have a C:\Windows.old folder? If so, how big is it?

MaximRecoil said:

My "System and reserved" (Windows 10 Pro, started with a clean installation, I've since installed 5.51 GB of applications) is 16.7 GB.

Do you have a C:\Windows.old folder? If so, how big is it?

It's 4.6GB

edzalsd said:

It's 4.6GB

How big is your C:\Windows\System32\wbem\Repository\OBJECTS.DATA file?

maximrecoil said:

how big is your c:\windows\system32\wbem\repository\objects.data file?

24mb

edzalsd said:

24mb

That file has been known to get bloated, at least in some past versions of Windows; obviously not the case here. I was going to suggest next that you do a search for the largest files/folders on your C:\ drive, but topgundcp beat me to it. Windows Explorer is too inept to be particularly good at this type of search, so a third-party application is best, such as the one he suggested.