Keeping this in consideration, is a 5 year old computer old?
If it's over 5 years old, replace it. Technology ages faster now than ever so unless it's an easy fix, you'll probably want to put your money towards a new computer. In that case, you can generally use the computer for another year or so.
Furthermore, is it worth fixing a 5 year old computer? Well that's both a matter of opinion and personal preference, but in general a regular consumer should probably replace their computer every 5-10 years. An older computer with a single problem may make sense to repair while a bit newer computer with a litany of issues may make sense to replace.
Just so, can a laptop last 5 years?
researchers show that a laptop that's under $700 will last between 2-4 years, a laptop that sets you back between $700-1000 will last up to 5 years, and a laptop that's over $1,000 could last up to 7 years. Of course, some laptops can cost up to $5,000!
How old of a laptop should you buy?
personally I'd go with a newer device with lower specs versus one that is 7 years old You can use more hardware/OS security features with newer hardware versus older hardware I always buy used laptops when it comes to that. Mostly 4 to 5 years old.