Norton and others can break "system restore". With some of these you have to disable to use system restore. If you get it back, wait a while before trying the update again while windows sorts out bugs.
My OS Win 10 Pro. I did a system restore to try and correct the above problem and got this notification after restore "System Restore did not complete successfully error occured (DX 800705 aa). However to my surprise I did get my start menu and search box back,but on the second reboot I lost them again. At a loss to know what to do next for a permenent fix.