XP
Compaq
Adapter - D-Link
Roadrunner

All of my computers and phones get the Wifi in my house and at a good strength.
Problem, The Compaq desktop receives the signal great and may can open browers for a moment upon restarting.

But the Spotify app, Modzilla and Explorer all act as if there is no signal.

I just did a recovery and the Dlink driver is working great.

Any suggestions of where I should look for what is blocking the signal in a computer from being read by the signals the computer is picking up?

I'm not the best at the pinging and firewall since I don't have much experience with these to problems. But I'm sure if it's good instructions, I can get do it.

Thank you in advance for any advice.