My advice is to reinstall the operating system with the rom that is in this same forum. It is a simple process and you only need a Pendrive of at least 16GB capacity.
Windows: http://www.mediafire.com/folder/nxlndr1f48nyf/Hi10_Air
CHUWI Hi10 Air reinstall Windows tutorial
• tools： 16G USB disk，micro USB-OTG cable 、HUB（3 interfaces or more)、 USB interface keyboard，as below
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Flash Windows
format the USB disk, as below:
【NTFS entitled WINPE】（it can’t be recognized if not entitled WINP）
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Copy the unzipped flash files to the root directory of the USB disk (as below)
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Connect the tablet micro-USB to Hub，USB disk and USB keyboard plug into HUB.
Press the power button to turn on (under the Off sta…