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COMPwize — Local I.T. Guys Solving I.T. Problems
Repairs

PC assembly service: bring your own parts

You've bought the parts, we put them together properly. We check everything works together, assemble and test the PC, and hand it back set up and ready to use.

What's included

  • Compatibility check of your parts list
  • Careful assembly and tidy cable management
  • BIOS update and memory profile set-up
  • Windows 11 install with current drivers
  • Stress testing and temperature checks
  • Fault finding if a part turns out to be faulty

What to bring

Bring every part for the build in its original box, along with the receipts or order confirmations. The boxes hold the screws, standoffs, cables and brackets we need, and the receipts are what you'll need if a part has to go back under warranty.

If you want Windows installed, bring your licence key or tell us if you'd like us to supply one. Include a monitor cable, keyboard and mouse only if you want them tested with the PC, and let us know about any drives you want carried over from an old machine.

A photo or copy of the parts list also helps. It lets us check compatibility before the parts arrive, so any problem can be sorted out while your return window is still open.

We check the parts before we start

Before a single screw goes in, we go through the parts list for compatibility: processor and motherboard socket, whether the board needs a firmware update for your processor, memory type and kit, cooler and graphics card clearance in the case, and whether the power supply has the connectors your graphics card needs.

If a part won't work, is missing or is the wrong model, we tell you before going further so you can return or exchange it. If a part turns out to be faulty on arrival, we show you how we confirmed it. Warranty claims on parts you bought go through the store you bought them from, and we give you the details they'll ask for.

Once the replacement part comes back, we fit it, finish the build and run the full set of tests. If waiting on a replacement changes anything about the job or the timing, we let you know before going ahead.

What the assembly includes

We fit the processor, memory, SSDs and cooler, including thermal paste where the cooler doesn't come with it pre-applied. The board, power supply, fans and graphics card go into the case, with the graphics card's power connector fully seated and the card supported if it's heavy.

Cables are routed neatly for airflow, and the fans are set to move air through the case in a sensible direction. We update the BIOS, enable the EXPO or XMP memory profile, turn on TPM and Secure Boot for Windows 11, and install Windows with the latest drivers and updates if you've asked for it.

Custom liquid cooling loops, extra fans, lighting controllers and additional drives can all be included. Let us know what's in the parts list so the quote covers the full job.

Testing before you get it back

Every assembled PC is stress-tested. We run a memory test at the rated profile, load the processor and graphics card for a sustained period while watching temperatures, and check the SSD's health and speed.

We then adjust fan curves for sensible noise levels, check every front-panel port and the audio jacks, and confirm Windows is activated and fully updated. If something only shows up under load, we find it here rather than you finding it at home.

You get a short summary of the tests we ran and the temperatures we saw, along with all the boxes and spare parts, so you have everything needed for any future warranty claim.

Pricing and getting your parts to us

Assembly is a fixed $274, the same as our repair labour, whether it's a simple office PC or a full gaming build. That covers the compatibility check, assembly, BIOS and memory set-up, Windows and drivers, and the testing. Our assembly work is covered for 12 months, and each part keeps its own warranty through the store you bought it from.

We're fully mobile, with no shopfront. Our pickup and delivery service is $50 extra and covers collecting your parts and bringing back the finished PC, with slots from 9am to 12pm, 12pm to 3pm or 3pm to 6pm. We cover about 12km around Mount Druitt. If you're not sure your parts list is complete, send it through when you book and we'll check it before anything is collected.

Typical assembly jobs

A typical job: a gaming PC bought as parts during a sale. We check the list, find the motherboard needs a firmware update for the processor, update it, then build, test and install Windows so it's ready for games the day it comes back.

A typical job: a parts order where the graphics card is dead on arrival. The rest of the build tests fine, so we give the owner the test results to take back to the store, and fit the replacement card when it arrives.

Questions

Why not assemble it myself?
Plenty of people do. Others would rather not risk bent processor pins, a half-seated power connector or a build that won't boot and has no obvious cause. We have the tools and testing software to confirm every part works under load, and our assembly work is covered for 12 months.
What if one of my parts is faulty?
We test to confirm which part is at fault and explain what we found. The replacement or refund comes from the store you bought it from under the manufacturer's warranty. When the replacement arrives, we fit it and finish the build.
Can you install Windows?
Yes. We can install Windows 11 using a licence you've bought, or supply one if you'd prefer. We install current drivers and updates, and leave out trial software and extras you didn't ask for.
Can you fix a PC I've already tried to build?
Yes. If you've built a PC that won't power on, won't show a picture or keeps crashing, we'll track down the cause, whether that's a loose connector, unsupported firmware, a memory setting or a faulty part.
Do I pay the $274 repair price for assembly?
Yes. Assembly is the same fixed $274 as our repairs. You supply the parts, and the only extra would be anything you ask us to add, such as a Windows licence or pickup and delivery.

PC assembly service: work in the workshop

A white custom PC build with blue case fans during assembly
A white custom PC build with blue case fans during assembly
Diagnosing a desktop motherboard, with the front panel header highlighted
Diagnosing a desktop motherboard, with the front panel header highlighted
A Ryzen gaming PC build running with red case fans
A Ryzen gaming PC build running with red case fans
A custom-built gaming PC with a liquid cooler and lit memory
A custom-built gaming PC with a liquid cooler and lit memory

Ready to get it fixed?

Book online in two minutes or call us. $274 fixed labour, diagnosis included.

Rated Excellent on Google
230+ reviews from local customers
Awesome service, issues sorted quickly. I will be back in future for any PC requirements. I have been dealing with these guys for years now and will continue to do so.
Richard Clarkson · April 2026
Super nice and reliable, without them feeling like they're trying to rip ya money.
Kaili Tarawa · February 2026
Recently got my laptop repaired from COMPwize and it was done relatively fast and cost repair was good as compared to other computer repair stores.
Nicholas Tumangday · November 2025
Greatest service from AJ and Michael, thank you so much for installing the hard drive and cleaning the PC up. Best service ever!
Azad Aghdar · November 2025
Absolute fantastic place to get your PC repaired here. Michael shows he really cares for his customers, very friendly and professional. The diagnostic and repair process report is very informative and helpful as well.
Michael Tang · October 2025
A true gentleman to deal with. I needed a part for my PC, he didn't even charge me for the part. Thank you.
John · October 2025
Michael is a magnificent IT professional. He will be honest with you from the beginning, and will save you time and money if he can. His prices are very good.
Leah Barrie · October 2025
Thank you so much AJ for your help, my computer is running smooth now, no more overheating. Great advice and service, 10/10.
Jay Jay · November 2025

Our service area

We cover about 12km around Mount Druitt for pickup and delivery, deposits and onsite work: Mount Druitt, Rooty Hill, St Marys, Minchinbury, Plumpton, Oakhurst, Glendenning, Colyton, Doonside, Blacktown, Quakers Hill, St Clair, Erskine Park, Werrington, Kingswood, Penrith, Marayong, Seven Hills, Prospect, Stanhope Gardens, Lethbridge Park, Ropes Crossing, Marsden Park, Schofields, Cambridge Park, Glenmore Park, Kemps Creek and the suburbs in between.

NSEW Rooty HillPlumptonOakhurstMinchinburyColytonGlendenningLethbridge ParkSt MarysDoonsideRopes CrossingQuakers HillSt ClairErskine ParkMarayongStanhope GardensBlacktownWerringtonMarsden ParkProspectSchofieldsCambridge ParkKingswoodSeven HillsPenrithKemps CreekGlenmore Park Mount Druitt12km radius
Mount Druitt12km radius
  • NOakhurst, Marsden Park
  • NEPlumpton, Glendenning, Quakers Hill, Stanhope Gardens, Schofields
  • ERooty Hill, Doonside, Marayong, Blacktown, Seven Hills
  • SEMinchinbury, Prospect
  • SErskine Park, Kemps Creek
  • SWColyton, St Clair
  • WSt Marys, Werrington, Cambridge Park, Kingswood, Penrith, Glenmore Park
  • NWLethbridge Park, Ropes Crossing

Approximate positions and distances from Mount Druitt.

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