Billion 7800n Internet - Light Drops From Green To Orange?

my family kept having a problem with our Billion 6800n router. (or something like that).Basically we pinned the problem down to it not having the strength to keep several connections running through it. So we upgraded to a Billion 7800n and found it is much more stable and much faster.However it has been having a similar problem to our previous router.

Occasionally the internet light drops from green to orange, and we can't load any more pages until it has gone back to green.Here is a picture of what it looks like when in that status.But the weird thing is the connection bars on the windows toolbar at the bottom of the screen still show full strength.As shown here.Now I thought it might be because it was sharing a power board with other connections going through it,so I transferred it to a smaller two-plug one instead.