When you're going to sell your laptop to look for a new one, you should identify first what kind of user you are.

1. BUYING A USED LAPTOP

2. LAPTOPS ARE A PART OF MODERN LIFE. EVEN IF
YOU'RE A HARDCORE GAMER WITH A POWERFUL
DESKTOP, YOU'RE STILL GOING TO NEED TO USE A
LAPTOP FOR THOSE EMERGENCY MOMENTS WHEN
YOU FORGOT TO TYPE YOUR HOMEWORK.

3. STUDENT
 If you're a student, you're
basically using the laptop for
surfing the net, creating
presentations and typing reports.
Most of all, you're going to need
it to be portable and cheap, since
it's going to take a lot of abuse
while being lugged around.
Walking from class to class can
be a drag with a big laptop, so
look for a laptop that's going to fit
your budget.
Recommended:
 Netbooks
 10 to 11 inch screens (depending
on the model)

4. TRAVELLER
 If you're a constant traveller,
keeping in touch with friends
and coworkers is important. At
the same time, portability and
size is important too. You can't
just carry around a big laptop,
because you have luggage too.
With that in mind, you need a
normal sized laptop with ample
features, not a netbook. Look
for a 13 - inch laptop that has
good power and enough
features to work with. At least 4
GB of RAM is needed for the
amount of multitasking you
need to do.

5. EDITOR
 Jobs that need editing such as
photographers and video editors
require laptops that can render
files quickly.
 One of the first things you should
look for is a laptop with big
storage space, like 320 GB. Also,
you'll need to look at the
processing speed and the RAM.
You'll need around 4 GB of RAM
to do stuff without compromising
speed. If you find a laptop with
more than 4 GB of RAM, go for it.
 As for the size, a bigger screen is
essential. If you think a 17 inch
laptop is too much, go for one
with 15 inches.

6. THANK YOU
Original Post:
http://www.prhwy.com/news/47544-buying-a-used-laptop.html