Wayne is being told his old Gateway PC isn't worth keeping since it's been in storage for a few years. Leo says it's probably running an old version of Windows -- likely XP. Hardware wise, there's probably nothing wrong with it. The reason people are saying Wayne shouldn't use it is because Microsoft isn't updating it, so security is an issue. He can run it safely by doing the following:
1. Stop using XP as an administrator. Use it as a limited user instead. Add an account as an administrator and then demote your existing account to limited user. This will stop over 90% of all the exploits out there.
2. Stop using Internet Explorer. Go with Google Chrome. It's free and far more secure.
3. Don't click on links in email.
4. Only get your software from original vendors.
5. Keep your anti virus software up to date.
6. Stop using Java
7. Use a password vault like LastPass
8. Turn on second factor authentication
The other issue may be RAM. He may not have a lot of RAM to run it for the modern world. Leo advises not putting any money into it. He's probably better off getting a budget computer like the HP Stream or even a Chromebook. He could also put Linux on it.