White screen of death - tried all the usual solutions

Hi all
I have a 2011 macbook pro, running yosemite.
Last year I had a similar problem and resolved it by booting into the recovery screen and reinstalling the OS.
However this time around I don't seem to be able to find the recovery partition. In fact when I look at the list of partitions through the boot shortcut it isn't there.
so I tried to recover using the Internet.  It ran through the scans and just as the spinning circle came up the screen went white again.  The display when booting in single line boot, partition etc is fine it just will not let me pass.
What is my next step? I have tried recovery panel, safe boot, and a few other things but no luck.  Can I get the recovery program on USB  and tackle it that way?
Any suggestions would be appreciated
Michael

What happens if you try command - R on a restart?
Recovery Partition – Recreate Without Reinstalling
Recovery Partition – Recreate Without Reinstalling (Requires Installer)

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