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  • Which Level of PC build is right for me?
    The higher the Level of PC build, the more powerful the PC will be when it is built! So the answer to this question really depends on what you want your PC to be able to do! If you want a reliable and future-proof PC for running productivity tools / basic gaming / streaming films then Level 1 will be perfect for your needs. If you want all of the benefits of Level 1, but with a bit more 'OOMF' to be able to run games at higher graphical settings and faster framerates, or run more demanding software packages, Level 2 will surely hit the spot. If, however, you want a PC capable of running games on ultra high graphics settings, running the most demanding software packages, or you just simply want the best... then Level 3 is the PC build for you. And remember, all Onyx PC builds are fully upgradable, so if you ever feel the need to push the limits that little bit further, Onyx Computers can help.
  • What can I expect after I order my PC?
    After you have selected the right PC Level for you, you can expect all of your PC components and accessories to be shipped directly to your door in one large box. This box will be split into three, clearly labelled, smaller boxes: - Box 1 - contains the CPU, Motherboard, RAM - Box 2 - contains the PC case, GPU, HDD - Box 3 - contains the PSU, keyboard & mouse, WiFi dongle, HDMI cable Your delivery will also come with a fully illustrated PC build guide - customised to your components. After you have ordered your PC, we would encourage you to create an account on the Onyx Computers website, and join in on the Forums for handy tips and tricks for building your PC.
  • I'm having trouble following the PC build guide - what can I do?
    Firstly, don't worry and take your time. Building a PC for the first time can be a daunting task, and if you are finding it difficult to follow the build guide that comes shipped with your PC you should check out the build videos found on the Onyx Computers website. If you are still struggling with any aspect of your PC build, you can always jump on the forums and ask our friendly community of PC builders, or send an email with as much detail of your issue as possible to Remember there are no dumb questions, and we were all beginners at one point!
  • I think one of my components is faulty - what next?
    If you notice any physical damage to any of your components, please notify us as soon as possible. Please do not attempt to use a damaged component in a PC build as it may actually cause damage to other components as well. We will be happy to help organise a replacement component after we have assessed the cause and extent of the damage. If you think one of your components might be faulty after completing the PC build, then get in touch with us on
  • How long does delivery take for my PC build?
    Delivery will typically be between 7-10 working days, but in most cases will be sooner. Due to the nature of the goods being delivered, someone MUST be home to sign for the delivery. We will organise email / text prompts with the courier to let you know when your PC is on its way!
  • What is the returns policy on my PC?
    If you are not 100% satisfied with your purchase, you can return the product within 14 days and get a full refund. You must return the full PC build kit, unopened, and in its original packaging (manufacturers packaging, and within box 1, 2 & 3). Any faulty components can be returned seperately for a replacement part, but only after an enquiry is raised via and express approval has been given for the return by Onyx Computers.
  • What type of screen do I need to use with my PC?
    Any type of screen with a HDMI input, you can use a dedicated PC monitor, or a TV. Just bare in mind that the resolution of the screen will impact the performance of your PC. A higher resolution screen like a 4K TV will require more power in order to run the same game as fast as a standard HD screen like a 1080p monitor. Screen resolution is determined by the number of individual 'pixels' on a display, usually written as 'screen width x screen height'. For example a 1920 x 1080 (1080p) screen has 2,073,600 pixels that your GPU needs to control the colour of, whereas a 4096 x 2160 (4K) screen has 8,847,360 pixels to control. The 4K screen has more than 4 times the pixels than the 1080p screen, and therefore your PC will have to, in theory, use 4 times the processing power to run a game at the same speed. This is important when specifying which Level of PC build you need, if you know you will be running your PC on a 4K screen you may be better suited with a more powerful PC Level. Unless you want to change the resolution of your screen to a lower one. You can change the resolution of your screen from within the operating system - screen settings, but you can only change your screen resolution to a lower one. You cannot increase your screen resolution to higher than it was designed for. If you are in any doubt, feel free to get in touch in this thread, or send an email to
  • I've built my PC but it wont turn on - why?
    There could be a number of reasons why your PC wont turn on straight away. Usually its something simple (happens to us all) - here are some of the most common reasons for your PC not turning on: Check your mains socket is turned on / working Check your PSU power switch is in the ON position ("I") It may be that your PC actually is turning on and you have just not connected the power / HDD activity LEDs correctly. Some PC fans are so quiet that you have to look at them to see if they are spinning. Check that your PC case front panel cables are all connected to the right pins on the front panel header on the Motherboard. Note that the LED cables need to be connected the right way around in order for the LEDs to light up. Please consult the Motherboard manual for the correct pins to connect the LED cables to. While you're checking the front panel cables, make sure that the power switch connector is properly connected to the front panel header on the Motherboard. Please consult the Motherboard manual for the correct pins to connect the power switch cables to. If you have checked all of these connections - it may be that you have not connected the HDMI cable to the right HDMI port on your PC - and therefore have no signal going to your screen. Make sure you connect your HDMI cable to the HDMI port on the GPU, not the HDMI port on the Motherboard I/O. If you are still having trouble with your PC build, please check on the Forums or email
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We're here to help!

We know building a PC can be daunting, so we've gathered some frequently asked questions to help you get up and running quickly!

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