I have the Belkin Powerline CPL connecting my PC to the network adapter downstairs I have telephones as well that use the same electric cables around the house Is there any way of managing the conflict to stop the computer being disconnected from the internet everytime the phone is answered thanks

SOURCE: connecting powerline ethernet adapters through orange livebox

1. Make sure the LiveBox is set to "TV ethernet non active"
2. Set OFF other existing connections (such as wifi), if any.

SOURCE: I have two Belkin powerline adaptors 200mbps type

Your hard disk is failing and should be replaced. Have you tried to press F1 when you get the message? If this doesn't help try to enter the bios and disable S.M.A.R.T.
Your first goal is to save the data so please do that before it's too late.

SOURCE: belkin powerline adapter doesnt connect to

try resetting the adapter
if not working try updating the firmware
if not working make sure ur adapter is pluged in the same power(electricity) phase of ur house with the router
the house will have different power phase so make sure of it
both the router and the powerline adapter must be in same phase of electricity

SOURCE: I currently am using a Zyxel G 220v 3 wireless

I'm NOT a Windows guru, but I think this is an issue with Windows, not your Zyxel driver.
There is a setting somewhere in the network area of Windows that tells it to automatically connect to a known favorite network if that network appears. I suspect you just have to find that setting, turn it on, and make sure the network you use is in your list of favorites.

SOURCE: I have been using my Belkin powerline adapter

Is the same phase used in your office?(electrical wiring)