Understanding Your Computer: Basics Explained

Welcome to the section of the Auckland Geeks Guide to Computer Repair where we unravel the mysteries of your computer’s internal workings. Understanding the basic components of your computer is the first step towards effective troubleshooting, maintenance, and upgrades. In this section, we’ll introduce you to the core components that make up your computer, explain their functions, and why they’re important. Let’s demystify these technological marvels together.

The Central Processing Unit (CPU)

Often referred to as the “brain” of your computer, the Central Processing Unit (CPU) is responsible for executing instructions from both hardware and software. Every task, from typing a document to playing a video game, relies on the CPU to process the operations. The performance of your CPU greatly affects your computer’s overall speed and efficiency.

The Motherboard

Think of the motherboard as the backbone that connects all other components of your computer. It’s a large circuit board that houses the CPU, memory, and expansion slots for additional hardware. The motherboard ensures that all components can communicate with each other, playing a crucial role in the functionality of your computer.

Random Access Memory (RAM)

Random Access Memory (RAM) is your computer’s short-term memory. It temporarily stores data that your computer is actively using so that it can be accessed quickly by the CPU. More RAM allows your computer to handle more tasks simultaneously, leading to smoother performance, especially when running multiple applications or tabs.

Hard Drive / Solid State Drive (HDD/SSD)

Your computer’s long-term memory is stored in its Hard Drive (HDD) or Solid State Drive (SSD). These components save your operating system, applications, and files even when the computer is turned off. SSDs are faster and more reliable than traditional HDDs but often come at a higher cost.

Graphics Processing Unit (GPU)

The Graphics Processing Unit (GPU) is specialised hardware designed to render images and videos on your screen. For gamers, video editors, and professionals who use graphic-intensive applications, a powerful GPU is essential for smooth, high-quality visuals.

Power Supply Unit (PSU)

The Power Supply Unit (PSU) converts power from your outlet into a form that your computer can use, distributing it to all the other components. A reliable PSU is crucial for system stability and ensuring that your components receive the correct amount of power.

Cooling System

Computers generate heat, especially when handling demanding tasks. The cooling system, which may include fans, heat sinks, and sometimes liquid cooling, helps to dissipate this heat, keeping your components within safe operating temperatures.

Expansion Cards and Peripherals

In addition to these core components, computers can be customised and expanded with additional cards and peripherals to enhance functionality. This includes network cards, sound cards, additional USB ports, and more.

Understanding these basic components and their roles within your computer can help you identify potential issues, make informed decisions about upgrades, and appreciate the complexity and power of your technology. As you become more familiar with these parts, you’ll gain a new level of confidence in managing and troubleshooting your computer.

Stay tuned for our next section, where we’ll delve into the signs that indicate your computer might need professional help. Armed with your newfound knowledge of computer components, you’ll be better equipped to recognise and describe issues, making the repair process smoother and more efficient.

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Stephen Barnes
21:39 25 Aug 25
Easy to talk to Great service Fast internet now
Robert Askew
22:19 19 Aug 25
A perfect result thanks Auckland Geeks
Paul Sommer
20:35 19 Aug 25
Efficient prompt service
Sarah Anderson
03:23 06 Aug 25
Kai from Auckland Geeks was brilliant at addressing all computer queries and attending to all the things that needed to be done on my MacBook Pro - the best! I would highly recommend!
Megan Brookman
19:08 05 Aug 25
Communication from the start with Gareth was outstanding, great Customer Service. Jason was our tech and he was absolutely brilliant - he listened, then explained and showed me what he meant. He was patient and most of all understood I wasn't an IT Geek. We have another laptop which we will be getting Auckland Geeks to look at next week. Thoroughly recommend, outstanding from start to finish.
Brian Anderson
08:00 04 Aug 25
Speedy service
Extremely helpful
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Noelle Henderson
10:19 23 Jul 25
Prompt, polite service from Dale who fixed the problem for me. Many thanks.
Doro Davies
04:00 21 Jul 25
These guys are the best. Fantastic communication and no problem is to big or small. Gareth and Dale have resolved months of frustration for us.
I can't recommend them enough.
Thankyou.
Doro D
Emily
02:04 16 Jul 25
Thank you Jack for your advice and transparency! He helped me find a solution over the phone and couldn’t be happier with how he went about it.
Ron N Smith
09:33 08 Jul 25
A great experience with Jason quick to solve my problems, and give me a greater understanding of what he actually did. Nice to know that this excellent support is available.
W Joubi
06:11 02 Jul 25
I’m really impressed with the services of Auckland Geeks. They came in, picked up the computer, upgraded it to a bigger hard drive and ram and returned it to me after 3 days as a new computer. Their prices and quality of work are excellent. Highly recommended company. Thank you.
Mark Everton
23:39 25 Jun 25
Disappointed, of course, that my iMac bit the dust after 8 years faithful service but Jack from Auckland Geeks did a great job identifying the issue(s), talking me through the options and supporting me as I moved on. I appreciated Jack’s clear, informed and friendly approach - communication was excellent and his service was most professional.
Hamza Alfayad
08:22 05 Mar 25
Very great service and good communication. I had Gareth and I would especially recommend him as he was quick and efficient in installing new parts into my pc and left it looking great ! There were problems in the beginning within some of the hardware but he was quick to find what needed fixing and fixed them right away no problem! Overall would highly recommend Auckland Geeks!!