Windows 10: my c disk is filled up

my c disk is filled up, i selected all the files and clicked properties and it only said 35 gb its not letting me see the hidden ones too while the entire c disk said all 165 gb was filled i dont know how to clear it up since this old laptop is only windows 7 and some third party cleaning tools dont work, im young so i dont know how to fix this, i wanna know how to clear up the space or if its fixable or not.

:)

 

Disk C Fills Up

When I use disk cleanup and delete some files, disk C fills up space even I empty the recycle bin still fills up space.

 

Local Disk C filled up and red while not being filled actually.

I had plenty of space in my Local Disk C folder, all of sudden the "apps and features" started showing 161GBs filled up space while it clearly is hardly 20GBs. It keeps filling up no matter how much I delete. Please suggest a solution.

I tried emptying all temporary files etc. But it keeps showing it as red.

 

Disk C filling up

Hello, my disk C has been filling up by itself. I freed 15GB of space by deleting the folders synchronized with dropbox and the next day disc C was full again.

I run ESET which healed 38 elements but nothing changed. Then I used ADW cleaner and CC cleaner which freed a little over 7GB.

Then I tried Dr. Web CureIt but it didn't find anything. Malwarebytes found again some elements and now it shows that everything is fine.

My problem is that right now my space on disk C is 6.9GB which shows that it's still filling up (much slower but still). I also don't know what happened with the other 8GB I freed yesterday. I don't have much left to delete so I don't know what to do.

I tried searching for what could by filling the space with TreeSize and WinDirStat but I can't really find anything suspicious with my poor knowledge about computers.

Disck C shows that 6.93/119 is free. Treesize shows that disc C has a size of 116.4GB with allocated 166.6GB and free space 6.9GB.