Originally posted by Reflux
I noticed that when I got home from work and opened the lid on my Laptop it was incredibly hot. I have since noticed that the screen doesn't turn off when the lid is closed. This can't be very good for it. Has anyone got any Ideas about htis?
What are the details of the laptop? Brand/model?
Some laptops can be controlled to hardware turn-off the monitor when the lid closes, some rely on software, and a few have no switch to determine screen position (that is rare though).
even if you run a blanking screen saver, unless it specifically powers off the display, the display backlight WILL stay on, it just blacks the screen out...
you might also check for a keyboard switch (usually Fn + (key)) to toggle an external display. many laptops will toggle 3 ways:
internal AND external
External only (which usually powers off the backlight)
if yours has that you could try toggling off the internal display before closing the lid.