Deleted the two small useless partitions and expanded C: to emcompass them, now down to 3 partitions as it should be:

Windows 10 Build 10586 (TH2) Update Problem.-aomeiinfo.jpg

Windows RE is enabled and I can boot to the Advanced Options menu by shift clicking on Restart from the original Win 10 Start menu or from the Power link on the Ctrl+Alt+Del window. Does not work if I shift click on Restart from the Start10 menu.