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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Nicole Saxon
22:50 11 Feb 26
Great IT Support!, we have had a couple of IT issues arise at work being hacked etc and the team at Auckland Geeks were super helpful and resolved our problems straight away. I would highly recommend
Jenny Donaldson
23:40 10 Feb 26
Dale turned up when they said he would, and was friendly and more importantly knowledgeable about my problem, which he fixed in rapid time, and also checked the general health of my PC. Would hire again
Brittany Sheweiry
09:10 28 Jan 26
Jack from Auckland Geeks provided excellent service and communication. He sorted out the windows 11 upgrade on my computer and provided me with great advice and information regarding a back up system option - which he then provided the best fit for my needs. The service was easy and fast. I highly recommend Gareth and Jack at Auckland Geeks.
-Green Bay, West Auckland
Trevor Ninness
02:19 27 Jan 26
I had a configuration issue happen randomly on my router at home and I was unable to fix it. I called Auckland Geeks and on the Sunday they were able to send out a technician that afternoon. Carlo arrived and quickly identified what was wrong and got my internet working again. Thanks Carlo and Ak Geeks for amazingly quick service on a Sunday. Awesome.
Lim Nov
23:33 14 Jan 26
Dale was amazing at fixing my BIOS issue. He explained everything clearly, worked efficiently, and made sure my PC was running perfectly before finishing. Super knowledgeable, patient, and professional. I really appreciated how smooth he made the whole process. Highly recommend Dale if you need any tech help!
When I booked it they called me instantly, they are really fast. Would book again if any issues.
Maxine Gay
21:15 21 Dec 25
Auckland Geeks are great. They are super professional and helpful. The service is quick and efficient, and they go the extra mile to make sure that you are comfortable with what is being proposed and/or what has been done to help you avoid further pitfalls. Highly recommend.
Jenny Metford
07:16 18 Dec 25
We used Auckland Geeks for the first time yesterday, and couldn't be happier with their service! Booking was easy, and we received an email confirming the appointment. The technician turned up on time, and was excellent. His name was Jack, and what a pleasure it was to have him help us out with our problems. He was very knowledgeable, polite and personable. We are very happy to recommend both the company and Jack, and will be calling them again when we next need tech help.
jan tasker
23:46 08 Dec 25
Very efficient from first phone call seeking an appointment, to the follow up email confirming name, time and details of technician.
Call by Technician Carlo Urbino 15 mins before his scheduled arrival time checking address.
Carlo was very thorough and explained clearly that it was a modem problem. He also tidied up various processes for me. He was very competent, knowledgeable and very respectful. Will definitely use Auckland Geek again.
Derek C
07:21 08 Dec 25
Highly recommend Auckland Geeks, in particular Jack. I shipped my PC from overseas when I moved to auckland. the PC was unfortunately damaged during transit. Jack was quick to provide me with a damage assessment and quote for me to claim the repair cost with the insurer. He also worked on his day off to replace the PC parts, clean up the interior and presented it back to me in excellent condition as the repair job was urgent.
Matt Hockly
02:08 30 Nov 25
Tarek and Gareth at Auckland Geeks saved the day again. We had server issues over the weekend. Our server are critical to running our business. Tarek came in Monday and got us back up and running fast and helped future proof our server for the future. I would fully recommmend thse guys for any of your IT requirements.
Julie Cook
03:40 25 Nov 25
Auckland Geeks responded very quickly with a phone call after we sent an email on a Saturday morning, having problems installing a new modem. An hour or so later, the technician was at our place and the problem was sorted. Our technician, Carlo, was friendly, knowledgable, gave us great advice, and wasted no time in getting our issue fixed. We will definitely use this company again.
Alan Douthwaite
19:16 24 Nov 25
I should have contacted Auckland Geeks three weeks earlier than I did. They turned up at very short notice and quickly diagnosed the cause of the Internet issues I had been having, which I had been attempting to fix myself. I highly recommend them.
Mathew Crowe
02:52 23 Nov 25
We have recently changed our IT arrangements for our multiple retail stores to Auckland Geeks. We could not be happier with the change. Fast efficient and very reasonably priced. They rectified a range of issues with our systems in a heart beat.
I would highly recommend these guys.
Gareth has been amazing to deal with and explains everything in simple terms that non IT minded people can understand.
There are no surprise costs like we have encountered from previous IT consultants
Bronwyn Olney
11:05 07 Nov 25
Excellent service at very short notice and came outside of normal hours to help us out of a difficult situation. Our second time using Auckland Geeks and again they totally impressed us with their service. Highly recommend to all!
Paul Brookbanks
09:26 03 Nov 25
My Mac Mini required an Auckland Geek to access my old RAM cards and replace with new 2x 16GB cards to get it moving again. Well he was amazing as fast and so knowledgeable so I can only praise his ability and positivity!
Many thanks
Paul
Sue Grant
21:15 17 Oct 25
Fantastic service. Gareth was great in getting back to me, ordering tablet and arranging time and day quickly for setup. Dale was efficient in transferring data over to new tablet, setting up printer and a pleasure to deal with.
Craftsman Plumbing Ltd
21:04 14 Oct 25
We had Auckland Geeks change our email hosting - They were fast and efficient and had great communication through the process. Will definitely be using them again for any IT needs.
janine cooper
19:37 13 Oct 25
Easy to deal arrange an appointment and Jack was very easy to work with. Tech stuff is not my world so what felt like a big issue to me was no trouble for them at all — they handled it quickly and without ever making me feel silly.
Roger Grant
21:38 05 Oct 25
Sometimes there are conflicts created when adding software or drivers to your computer. And sometimes it takes an outside cool knowledgeable head to find the issue and resolve it. Jack navigated to the issue in good time and the system is running very smoothly now. Much appreciated.
Gladiator del Wino
21:29 24 Sep 25
Being semi computor illiterate we found Geeks service (Dale) extremely efficient, educational and effective in helping us set up our new system. Well priced too.
David Grace
21:19 24 Sep 25
As Always, Auckland Geeks were fast on the cas3, my Tech Dale was personable, and swiftly identified my issue, enacted the fix and set up, I know who to always call if I have any issues in the future.
Jenny Pullar
21:25 21 Sep 25
I feel very fortunate to have found Kai through Auckland Geeks. He was a brilliant Mac service technician and through his ingenuity gave me in effect a major system upgrade, solving all my computer issues in the process. The outcome could not be better & I am thrilled with the result!
Jim Mather
05:19 06 Sep 25
Awesome service from Carlo Urbino who came to our home to install a new ASUS router. It was up and running, and customised to our requirements within an hour! All of this occurred on a Saturday afternoon after lodging my online support inquiry late on Friday night beforehand. Brilliant and I highly recommend Auckland Geeks!
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
Nice guys
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.
FMK Epsom
05:30 23 May 25
Consistently outstanding professional advice from Gareth and the team at Auckland Geeks! Their expertise is truly impressive, and I always feel confident in their recommendations. A solid 10/10 every time!
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!!