Upgrading from Windows 7 to Windows 10

I have tried to upgrade from Windows 7 to Windows 10 and got through  the Downloading, Preparing for Upgrade, Upgrade is ready to instal, Configure Update, and Start to load Files. The Computer starts Copying Files and gets to various percentages before just turning OFF completly. I have got to this point several times with the same result. although the percentage changes each time. An error message comes up : C1900101-2000C. Windowa couldn't be installed.

When I manually turn the Computer back on a message says: Restoring to your previous Windows 7.

How do I overcome this problem??

September 8th, 2015 3:30am

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