Router lights

I'm using Windows 7 Pro 64 bit with a hardwired WRT54GL router. My computer is the #1 light and the other computer is #2. Both lights stayed on when the computers were off. I just had to reformat my computer and now when both computers are off the #1 light goes out and only the #2 light stays on for the other computer. When I turn the #1 computer on the light comes on and goes out when I shut it off. Anyone know why the #1 light won't stay on when the computer is off? If I turn the power off to the router for about a minute and then turn it back on, both lights burn until I turn on the computer and shut it down again, then # 1 goes out. Shut power off to router turn back on and both lights burn. It started doing this after I reformatted.
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No just that light. Before I reformatted when both computers were off number 1 and number 2 lights were on when both computers were off. Now when both computers are off only number 2 light is on.

The power supply/motherboard on #2 might retain some power until you switch it off at the back of the case or at the wall plug

What I don't understand is it's been OK for a year and suddenly after I had to reformat and install Windows again it's out of wack.