It was a windows Feature update to Windows 10, version 1607 which failed and now is installing again and eating away at my hard drive. I will try to uninstall it as soon as it finishes.

Hello again everyone. Thank you all for the replies, today as per usual I have performed my daily disk clean up and got 6.88 gb back from temporary windows installation files. Which leaves me...

Ok, hopefully it would show 107483107484107485107486

Hello again, I have still decided to run WinDirStar today and this is what I got. Prior to running this program I did what dalchina suggested with system restore and then I pressed delete, now...

Thank you for all of Your suggestions I will try to monitor with WinDirStar for a couple of days and then will get back with more information.

My c drive space is decreasing rapidly (at least 1 gb per day). I have bought a laptop with pre-installed windows and I have already deleted old win. I have run system and disk clean up, checked for...