Grey (mostly) blue (sometimes) when starting MacBook Pro

Hi
I had my mac book hooked up to the tv via hdmi cable as I often do. After finishing using I closed the lid as usual and when I came to use it again I it wasn't responding and was a little warm.
When I rebooted manually I got the chime, the apple logo, the rotating grey wheel then a plain grey screen.
I've tried all the different resets, i.e cmd r, shift, cmd r p, cmd v, cmd s.
When I did a different safe mode start up with the black screen and white letter modes I could see a few errors but went sure what they meant and they disappeared and it went to a blue screen which is also what happens when I do cmd r.
Can anyone please help me out?
Ps - I don't have lion. I have the latest osx upgrade from about 2 months ago (can't remember the name)

Try resetting the SMC - might help, cannot hurt.
Barry

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