: Look for "white spots" or dead pixels that only appear on bright backgrounds.
: Batteries are "consumables." A 4-year-old laptop will almost certainly need a battery replacement soon. is buying a used laptop a good idea
“While buying new will always give you more protections... buying a used laptop can be a great way to make some [savings].” PCWorld Red Flags to Watch Out For : Look for "white spots" or dead pixels