Windows 7 showing incorrect and decreasing hard drive space

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MikoKuch

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Nov 6, 2014
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Hello,

yesterday I put together my first custom built PC. Everything went fine until today, when I noticed that the free space on my hard drive was constantly decreasing. At the moment, it goes down a few gigabytes every couple of hours. I went into the C folder, selected all the files and clicked properties. There, the size of all the files (yes I do have hidden files and system files showing) was 104 GB while in Computer, the it says 742 GB/931 GB free which is 189 GB worth of files. That's almost 80 GB more. I also checked the file sizes with WizTree and there it was 104 GB occupied too. Can anyone tell me what is going on and how to fix this? I know it's not Windows updates because I have them set to ask which to download, and I have system restore turned off too. My hard drive is a Seagate Barracuda 7200.14 with advanced format. I'm using Windows 7 Professional. I'm adding a few screenshots:
http://imgur.com/a/VuBxa
If you need any more info, please ask.
 
Solution
Darkbreeze
Disable System restore. Also, go into Control panel, system, advanced system settings, click settings on the performance category, click on the advanced tab, next to virtual memory click "change" and see how much disk space the system has allocated to the page file. You can click on "custom size" and enter 256mb minimum and 4096 max, then click apply and save and exit out. That will stop windows from reserving more than 4GB for the page file, which it certainly doesn't need.

More likely than not, between those two items it probably accounts for what your're losing. There are a few other things that could be causing this as well so let me know if that doesn't correct the issue. Also, if windows is doing a lot of updates in the...
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Darkbreeze

Darkbreeze

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Jun 24, 2014
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Disable System restore. Also, go into Control panel, system, advanced system settings, click settings on the performance category, click on the advanced tab, next to virtual memory click "change" and see how much disk space the system has allocated to the page file. You can click on "custom size" and enter 256mb minimum and 4096 max, then click apply and save and exit out. That will stop windows from reserving more than 4GB for the page file, which it certainly doesn't need.

More likely than not, between those two items it probably accounts for what your're losing. There are a few other things that could be causing this as well so let me know if that doesn't correct the issue. Also, if windows is doing a lot of updates in the background since it's a fairly new installation, doing all the available updates to windows 7 may take up as much as 30-50GB before it's done with all the service packs, security and .NET updates. I'd manually run windows update and reboot, repeatedly, installing the necessary critical and important updates until no more updates show as available then run disk cleanup and click on "clean up system files" to remove the cached windows update and temporary files.
 
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