?!? You turn off the TV and that causes the issue? That's pretty strange. What is the display cable you're using? HDMI? Can you try VGA OE dvi just to see if the behavior changes?
Yeah its a strange one, and it is via HDMI. I've changed the system type from 440FX to Q35 and so far it seems to have fixed the issue, in fact the whole thing seems a little bit more stable and a bit faster.
I let you know if it still ok tomorrow, i just need it to keep me going until the openelec VM is ready.