Wallop!
Quote from step 2 (yes STEP 2!) of troubleshooting pages:
Reseat chips and cables:- You can solve some of the strangest problems(random hang-ups or errors)by opening the case and pressing down on each socketed chip.you should also reseat any cables to make sure that they are making good contact.
Right, so you're telling people with virtually no knowledge of PCs to "reseat their chips"?! Are you mad?!