-> First Pick a Operating 
System : Mac, Windows or Chrome OS.

Most laptops come with one of three operating systems: Windows, Chrome os or MacOs (for MacBooks only). Choosing the right one is a personal preference.
Windows 10 : The most flexible operating system, Windows, runs on more laptop models than Chrome OS or Mac OS X. Windows notebooks range in price from under $150 to several thousand dollars and offer a wide array of features from touch screens to fingerprint readers to dual graphics chips. Windows 10, the latest version of Microsoft's flagship operating system, provides a number of improvements over Windows 7 and 8, including the ability to switch between tablet and desktop modes, a revamped Start menu with live tiles and the powerful Cortana digital assistant. 


->Decide If You Want a 2-in-1

Many PC laptops fall into the category of 2-1-in one laptops, hybrid devices that can switch between traditional clamshell mode, tablet mode and other positions in between such as tent or stand modes. 2-in-1s generally come in two different styles: detachables with screens that come off the keyboard entirely and flexible laptops with hinges that bend back 360 degrees to change modes. 
Most of these systems are much better at serving one purpose than the other, with bend-backs being laptops first and detachables offering a superior tablet experience. However, if you don't see the need to use your notebook as a slate, you'll usually get more performance for your money with a traditional clamshell laptop.


-> Choose the perfect size

Before you look at specs or pricing, you need to figure out just how portable you need your laptop to be. Laptops are usually categorized by their display size.


-> Check That Keyboard and Touchpad

The most impressive specs in the world don't mean diddly if the laptop you're shopping for doesn't have good ergonomics. If you plan to do a lot of work on your computer, make sure the keyboard offers solid tactile feedback, plenty of key travel (the distance the key goes down when pressed, usually 1 to 2mm) and enough space between the keys. If you're buying a Windows laptop, be sure it has Precision touchpad drivers. 


-> Pick Your Specs

Notebook components such as processor, hard drive, RAM and graphics chip can confuse even notebook aficionados, so don't feel bad if spec sheets look like alphabet soup to you.
Here are the main components to keep an eye on.

CPU: The "brains" of your computer, the processor has a huge influence on performance, but depending on what you want to do, even the least-expensive model may be good enough.

RAM: Some sub-$250 laptops come with only 4GB of RAM, but ideally you want at least 8gb on even a budget system and 16GB if you can spend just a little more. For most folks, 32GB or more is more than enough while 64GB and above is reserved for power users.

Storage Drive (aka Hard Drive): Even more important than the speed of your CPU is the performance of your storage drive. If you can afford it and don't need a ton of internal storage, get a laptop with a solid state drive (SSD) rather than a hard drive, because you'll see at least three times the speed and a much faster laptop overall.

Display: The more pixels you have, the more content you can fit on-screen, and the sharper it will look. Sadly, some budget laptops still have 1366×768 display and so do a few business laptops, but if you can afford it, we recommend paying extra for a panel that runs at 1920 x 1080, also known as Full HD or 1080p. Higher-end laptops have screens that are 2560 x 1600, 3200 x 1800 or even 3840 x 2160 (4K), which all look sharp but consume more power, lowering your battery life. 

Graphics Chip: If you're not playing PC games, creating 3D objects or doing high-res video editing, an integrated graphics chip (one that shares system memory) will be fine, especially Intel's latest Iris Plus graphics. If you have any of the above needs, though, a discrete graphics processor from AMD or Nvidia is essential. 


-> Mind the Brand

Your laptop is only as good as the company that stands behind it. Accurate and timely technical support is paramount, which is why Laptop Mag evaluates every major brand in our annual Tech support showdown. This past year Apple came in first place, followed by the big story of the year: Razer, while Dell rounded out the top three.