why does i loose my internet connection automatically after being idle for some time?

[Jim]

Because it's not tight. (Loose rhymes with Moose and Noose. Lose rhymes with Shoes)

The only thing that makes sense to me is this:

While you're using the computer, the air vents can get enough air to keep the laptop cool. When you're not using it, maybe you're putting the laptop somewhere that blocks the air vents. The heat builds up and the laptop stops working right.