Hello, The only repair instructions that I can find on th web are for the P500 series. The layout does not match this P505. The Realtek wireless card, which has always been quirky, has failed. I want to replace it. None of the hatch doors contain it, so I assume that the entire bottom chassis cover needs to come off. But before doing this, I'd feel better hearing that it's the correct path. Does anyone have printed information or working knowledge of it? Thank you, Gary