Movie Maker is a part of Windows and can't be uninstalled. I assume You are confusing "Memory"(that's RAM) with free Hard Drive Space. Go to My Computer and right click the C: drive and choose Properties. This will give you a Pie chart to see how much Free Hard Drive space you have. Now click the Disk Cleanup Wizard. Also go to Control Panel/Add Remove Programs and remove any programs you are not currently using. You can also download CCleaner and delete temp files. But Hard Drives are very cheap now, you should just buy a bigger one.
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