Shopping a used computer is a task which is even harder than buying a new one. There are quite some things for you to have in your mind while looking out for a used one. You need to think about what you will be using it for, is that system is good,  what is the system that is best for you, what are the additions you need, will it last as long as you want it to and the most important question your mind raises to you is if all this is worth the price you are going to be paying.
 

Before buying a used computer you must make sure what purpose it will be serving you. You need to know what your system has to do the best for you. Any lightweight system would satisfy you extremely well if your usage is just apps and web services but if you are looking for system which can help you do gaming, editing and software related tasks, you need to look for it well. It's quite important to analyze if you need a portable system or it would be fine if you cannot carry it along. Most important thing to make sure of is the battery life of your system which is already been used.  You need to analyze the battery life before purchasing a used system. Ultimately that would be the most important thing you need when you buy a used system.
 

You need to be sure if you're buying the used system, you must feel your investment is much more better than buying a new one. From price to its quality, it has to result you in the best way possible. One quick idea to make sure about the price is have a comparison with the used and the new and analyze which one is worth it. It also becomes crucial to know the updates of the system and the price you will need to spend on it.
 

A processor must be chosen wisely to meet the demands that you are buying the system for. A wise choice to be made is between Intel and AMD in the first place. The RAM available these days is probably 4GB commonly which is definitely a good RAM but gamers and graphic editors need to make a wiser choice. If you are into heavy-duty video editing and gaming, make sure you have a GPU which has at least 2 GB memory. Make sure you choose a system with a preloaded windows. Your storage space is also to be taken care of. 500GB to 1Tb is what you'd get but if you wish to have a system functioning even faster you can get one with a SSD. Your most important choice has to be on the brand you choose to buy. Ultimately, this is what that will satisfy you the best.
 

After all the major decisions you have made, the last things to do before opting for the used computer is checking over the frame and the body for cracks and surface damages. You need you make sure you take a look at the screen for dead pixels, haze or discoloration. Check out for broken or malfunctioning inputs and ports. On making sure that you will be completely satisfied, opt to buy your most favourite used computer.