Anna has an old Sony Vaio laptop that won't turn on anymore. Leo says that the battery may have finally died. Her laptop is pretty old and the battery may not be able to keep a charge. She should try taking the battery out and see if the laptop will turn on with the AC adapter. If it can't, she may need to get a new battery for it. They're about $90. That's a lot to spend on an old machine, though.
Sam bought a new Sony Vaio with Windows 7. What should he do about antivirus software? Leo suggests going with Microsoft Security Essentials. It comes bundled as Windows Defender in Windows 8, but he'll have to download and install it separately for Windows 7. Antivirus software won't protect him from his own behavior, though.