Same problem like questioner's dad xp

Apr 1, 2018
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I got an almost unused win xp but can't get it to connect with internet. All possible methods suggested from global community don't work. I changed RAM to no effect. Which new component should I add? I want it to work as it was the last gift from my mom & she died the same day. So any serious suggestion that could work, & I'll be grateful soling I live. Thnx