Fix or buy a new one? Fix!
Failures of laptops happen quite often. The reason is prosaic - the laptop is a portable device, so it is quite fragile and it can be easily damaged by an accident. Child or dog can drop it from the desktop or the couch - if you're unlucky, the screen may break. Does this mean that you have to buy a new computer? Absolutely not! You should take your broken laptop to the trusted computer service, or you can check if the warranty does cover this type of failure. Do not panic - you can always find a solution that will not ruin your wallet.
You should keep your computer safe. What do You really know about viruses? If You think they are not dangerous, you are in a big mistake. In fact, computer virus can destroy all your data, but damage could be worse. What can you do when your computer gets infected? First try to use an antivirus program to scan your disk, it is still possible to remove a problem. What if it will not work?
In the worst case, call for help to a computer service - they will know what to do to fix your computer and save your files.
About tablet computer (Wikipedia)
A tablet computer, commonly shortened to tablet, is a mobile computer with a touchscreen display, circuitry, and battery in a single device. Tablets come equipped with sensors, including cameras, a microphone, and an accelerometer, and the touchscreen display uses the recognition of finger or stylus gestures replacing the usage of the mouse and keyboard. They usually feature on-screen, pop-up virtual keyboards for typing. Tablets may have physical buttons for basic features such as speaker volume and power, and ports for network communications and battery charging. Tablets are typically larger than smartphones or personal digital assistants with screens 7 inches (18 cm) or larger, measured diagonally.1234
Tablets can be classified according to the presence and physical appearance of keyboards. Slates and booklets do not have a physical keyboard and typically feature text input performed through the use of a virtual keyboard projected on a touchscreen-enabled display. Hybrids, convertibles and 2-in-1s do have physical keyboards (although concealable or detachable), yet they typically also make use of virtual keyboards.
The format was conceptualized in the mid-20th century5 and prototyped and developed in the last two decades of that century. In April 2010,6 the iPad was released, which was the first mass-market tablet with finger-friendly multi-touch and a dedicated operating system. Tablets experienced a rapid rise in popularity and ubiquity and became a large product category.7
As of November 2015, tablet use in the world is led by the iPad with a market share of 65.66% and Android tablets with a market share of 32.08%.8 The iPad holds majority use in North America, Western Europe, Japan, Australia, and most of the Americas. Android tablets are more popular in most of Asia (China and Russia an exception), Africa and Eastern Europe.