That error code is a known update problem and it is either caused by old Nvidia graphics drivers or additional USB devices being plugged in during the upgrade (mouse and keyboard are not affected and can remain plugged in ) http://answers.microsoft.com/en-us/windows/forum/windows8_1-windows_install/error-0xc1900101-0x40017-when-installing-windows/8c893ae6-0e9b-4b7d-a647-b9065099efd6