Linda gets a red/green pattern on her HP computer from time to time. Leo says that's a defective component. Maybe your video card. It could also be a corrupted video display driver. Leo would recommend returning the computer if you can. Call HP. They'll make you reinstall Windows, but it's obviously a defective computer. You'll probably have to fight with them to get them to replace it. But it's definitely a lemon. You may need to get your bank involved.
Larry bought a Samsung S20 "Fan Edition" Android Phone. He's having all sorts of issues with crashing, screen issues, and other problems. Leo says that it's likely software issues that are causing the problems. Samsung is known for some of the best screens in the business, so it's unlikely, but not impossible, that it's a hardware issue. But Leo advises to contact Samsung Mobile and demand a new one.
Jerry bought a new MacMini a few months ago, and after he shut it down, it never came back on. Apple replaced the logic board, but when he returned it, his RAM capacity was cut in half. So he returned it to Apple. After a few weeks, he got an error and would restart. Now it just locks up. Leo suspects that Jerry has a "Lemon." He should take it into Apple, talk to the manager, and tell them you want a brand new one. Be direct, but pleasant. You catch more flies with sugar than honey. Use the term CRU - Complete Replacement Unit.
Joshua has a love-hate relationship with his new iPhone. It's freezing up a lot. iOS11 also has a glitchy screen, too. Leo suspects that it's a Lemon and since it's within about 3 weeks, he should be able to get a new one. Leo says there's some good features in it and if he brings it back to the store, they should be able to swap it out. It's definitely a lemon. That's all behavior that isn't normal. Battery life isn't as good as the iPhone 7, but not as bad as Joshua is complaining about.