Many branded computers are manufactured by old reliable computer companies. You still have Dell, Apple, and HP most notably. Additionally, there are relatively new computer companies who are now manufacturing their very own PCs and laptops. If you purchase from any of these manufacturers, you receive at the very least 1 year of international service warranty.
Another benefit of purchasing a branded computer is that they possess a 24/7 technical support for you in the event you need the aid of their representative. You may either call them up, send an email, or talk to a representative online. This 24/7 technical support is usually not available for unbranded computers. you may also want to consider if the operating system is already bundled with it.
Most branded computers are bundled with an operating system, either pre-installed or with an installer to go with it.