Glad that worked.
As for the wireless, it sounds like you have a competing wireless network near you. As Roy69 told you, go into the adapter properties and change the channel you are using. Next thing is apply security to the network and it will only allow your computers into the network.
Most common problem for the wireless coming and going is nearby networks on the same channel, A microwave oven in line of sight between your two computers (should only cause interference when using the microwave) and what it sounds like to me is you may have a 2.4 ghz wireless phone system in your house. Again, change the channel on the net and if that does not work, consider upgrading phones to 5.4 ghz (Guessing on numbers) phone. Easy way to check is to shut down phones and connect and if signal becomes stronger and stable...thats it.