I recently bough a new Alienware 17". I had 2 laptops before this, none did the problems this does.

I start up the machine, do whatever I want, no problem.

I leave for more than an hour or so, therefore I close the lid.

When I come back, I open the lid, expecting the laptop to turn the screen back on, but stays black.

I only able to restart with power button. If I lock the screen when I leave, I can't even do that, I have to hold the power button to hard off.

My other 2 laptops did not do this, they are ready to go even after days of closed lid.

Of course, everything in the power settings are what it should be: "do nothing" on lid close, "never" on sleep after and hibernate after. Same settings were on my other 2 laptops, the only difference are the OS: XP and Vista for the old ones, Win7 on this one.

Any solution/advice?

Thanks in advance