Tom's mother had relatives come over for Thanksgiving, and ever since they were there, her iMac has been having problems. She kept seeing "keychain" popping up, and she deleted everything in it in an attempt to fix the problem. Leo says if Keychain is popping up, it means that the Keychain password somehow got wiped out. So all Tom should have to do is log in using the computer password. Tom says when he gets into the keychain, there's nothing in it.
Marie had someone set up her router, and she needs to get the Wi-Fi password to set up a new printer. Leo recommends taping a piece of paper with the Wi-Fi password to the router next time so she won't forget or lose it. She can reset the router by powering the router down or unplugging it, then pressing and holding the little reset button for about 10 seconds, then when she starts it back up she can configure the router. But this would require her to set up a new password and reset all of the devices connected to it.