I was checking in on an old VM today. I found it didn't boot, staying long time loading and finally returning something like the above error.
What the solution was? Disabling (unchecking) 3D Acceleration.
Have to say: since the last time I used it, I had been messing around with graphics card pretty much.
Well, this did the trick for me. I checked a lot before on the internet, but the memory error seems to be pretty common and could come for a number of reasons. Finally, I read somewhere about this. If I remember where, I would quote.
However I can't get back to 3D acceleration now, but at least it works.