Intel(R) HD Graphics 3000 not cold booting

Hi,

I've a Intel(R) HD Graphics 3000 that's not cold booting one of my displays on my laptop (built-in display) - the other cable-connected display starts ok. I've been powering off and back on to get the primary display to work. Today, I swapped displays - so the primary was the one on the VGA cable. On doing the swap, and clicking 'OK' on the Intel graphics settings, the built-in display came to life.

Any thoughts on this problem ?

Mike.