Unable to install build 10536 from the fast ring in my Lumia 720. Any solutions?

i joined the insider preview recently and updated my phone to windows 10 mobile. After installation the storage wasn't opening. The store crashed very frequently and now unable to update to build 10514 and build 10536. While installing it gives an error. Please help.

U need to hard reset ur phone... Such things happen when u don't hard reset after updating to win10... Make sure u don't restore backup after resetting... U need a fresh OS.