Updated November 2026 | Geeks Callout London
Upgrading a gaming PC can be exciting, especially when you’re replacing an ageing processor or motherboard. But one small installation mistake can leave the whole computer refusing to start.
That’s exactly what happened to a customer in Barnes, South West London, who contacted Geeks Callout after attempting to upgrade their gaming PC.
The original system used an MSI B350M motherboard. Unfortunately, the processor installation went wrong, leaving the computer completely unresponsive.
Our engineers investigated the fault, identified the damaged components and got the machine working again with a replacement Gigabyte motherboard.
Here’s what happened, how we fixed it and what anyone considering a similar upgrade should know about modern PC hardware.
A Gaming PC That Wouldn’t Turn On After a Processor Upgrade
The customer had been planning to improve their computer’s performance with a processor upgrade.
During installation, the pins on the replacement AMD Ryzen processor became bent. The customer tried reinstalling the original processor, but the computer still wouldn’t start.
They also disconnected the power supply, left the system switched off and tried reconnecting everything. Unfortunately, nothing brought the PC back to life.
By the time they contacted us, the machine showed no signs of starting.
The customer understandably wanted to know whether the processor, motherboard or power supply had failed — and whether the entire computer would need replacing.
Our First Step: Finding Out What Was Actually Damaged
A PC that won’t turn on after a hardware upgrade doesn’t necessarily need a replacement motherboard.
Problems can arise from incorrect power connections, damaged processor contacts, an unsupported CPU, faulty memory or a short circuit.
Our technician visited the customer in Barnes and began checking the system.
We inspected the processor and motherboard, checked the power supply and attempted basic troubleshooting, including clearing the BIOS settings.
The damaged processor pins were also examined, but the computer remained unresponsive.
Even when the original processor was reinstalled, the system failed to start normally.
At this point, the fault needed more detailed investigation, so we arranged for the computer to be examined at our workshop.
What We Discovered at the Workshop
Further testing confirmed that the original processor was still functional.
The replacement processor, however, had been damaged during installation. The original MSI motherboard had also failed and could no longer be used in the system.
This was an important finding because the customer initially had no way of knowing which components were responsible.
Rather than recommending an entirely new computer, we looked at which existing components could be retained.
The power supply, memory, storage drives and other reusable hardware were checked for compatibility with the replacement motherboard.
This meant the customer could get the computer working again without replacing everything inside the case.
Replacing the MSI Motherboard with a Gigabyte Board
For this original repair, we selected a Gigabyte B450M H motherboard and an AMD Ryzen 5 1600 six-core processor.
These were suitable components for the system at the time and provided a practical way to replace the damaged hardware.
Our engineer removed the failed MSI motherboard, installed the replacement Gigabyte board and fitted the processor and compatible existing components.
After reassembly, the computer powered on successfully.
We then checked the system’s operation before arranging its return to the customer.
The replacement was completed within a day of obtaining the necessary components, and the customer had a working gaming PC again.
The outcome: We restored the computer without requiring a complete new build.
What Would We Recommend for a Similar Upgrade in 2026?
Motherboard technology has moved forward considerably since this repair.
The original MSI B350M and Gigabyte B450M H use AMD’s older AM4 platform. Those motherboards can still be useful when repairing an existing compatible system, but they wouldn’t usually be our first choice for a new high-performance gaming PC built today.
For a modern build, we’d look at the customer’s current processor, graphics card, budget and planned upgrades before choosing the replacement motherboard.
Modern AMD Gaming PC Motherboards
For an AMD Ryzen 9000-series desktop gaming PC, examples of current motherboard options include:
Gigabyte B850 AORUS ELITE-P ICE
A modern AM5 motherboard option for gamers who want DDR5 memory and a platform with room for upgrades.
Gigabyte X870 AORUS INFINITY
A higher-end AM5 option for enthusiasts seeking modern connectivity, performance features and flexibility.
Gigabyte X870E AORUS MASTER X3D ICE
An enthusiast-class motherboard aimed at powerful AMD gaming builds, including systems using Ryzen X3D processors.
For customers staying with MSI, alternatives include the MAG X870E TOMAHAWK MAX WIFI and MPG X870E CARBON MAX WIFI.
These are examples of current products rather than universal replacements. The correct board depends on the processor, memory, case, cooling and features required.
Modern Intel Gaming PC Motherboards
For customers building around a compatible Intel Core Ultra desktop processor using Socket LGA1851, examples include:
Gigabyte Z890 AORUS ELITE WIFI7 PLUS
An enthusiast-oriented Intel motherboard with modern connectivity.
Gigabyte Z890 EAGLE PLUS
An alternative for a compatible Intel build where the customer wants the Z890 platform without necessarily choosing a flagship board.
MSI MAG Z890 TOMAHAWK WIFI
Another option for Intel users who prefer to remain with MSI.
Intel and AMD motherboards are not interchangeable. Choosing the correct processor socket is essential.
Can You Replace an Older MSI B350M with a Modern Gigabyte X870E or B850 Motherboard?
Yes, you can move from an older MSI-based system to a modern Gigabyte platform, but it isn’t necessarily a direct motherboard swap.
For example, an MSI B350M motherboard uses AMD’s AM4 socket and DDR4 memory.
Modern Gigabyte B850 and X870E motherboards use AMD’s AM5 socket and DDR5 memory.
That means the original Ryzen 5 1600 processor and DDR4 memory from our customer’s repair would not work in those newer motherboards.
A modern AM5 upgrade would require a compatible AM5 processor and DDR5 RAM, along with checks for cooler compatibility, power requirements and the existing PC case.
This is why we always assess the complete system rather than simply choosing a motherboard based on its model number.
Five Things to Check Before Replacing a Gaming PC Motherboard
1. Processor Compatibility
The motherboard must support the exact processor model, not just the manufacturer.
An AMD Ryzen processor cannot be installed in an Intel motherboard, and even processors from the same manufacturer may require different sockets.
2. DDR4 or DDR5 Memory
Moving from an older motherboard to a newer platform may also require new memory.
DDR4 and DDR5 are physically different and cannot be used interchangeably.
3. Case Size and Motherboard Layout
Not every motherboard fits every PC case.
ATX, Micro-ATX and Mini-ITX boards have different dimensions. Internal clearance, mounting points and component placement all matter.
4. Power Supply and Connections
A replacement motherboard needs the correct power connections.
It’s also important to check whether the existing power supply is suitable for the processor and graphics card, particularly in a high-performance gaming system.
5. Cooling and BIOS Compatibility
The existing CPU cooler may require different mounting hardware. You should also confirm BIOS support for the intended processor before installation.
Taking the time to check these details can prevent expensive mistakes.
Why Proper Diagnosis Matters More Than Replacing Parts
The most useful lesson from this Barnes pc repair is that a computer failing to start doesn’t always mean every major component has failed.
In this case, the customer was worried that the processor, motherboard and possibly the power supply were all damaged.
After testing, we established that the original processor and several other components could still be used.
That allowed us to concentrate on replacing the faulty hardware.
It’s the approach we continue to take at Geeks Callout London: diagnose the problem first, identify what can be reused and give the customer practical options.
Need Help Upgrading or Repairing Your Gaming PC?
Whether you’re replacing an ageing MSI motherboard, switching to Gigabyte, upgrading your AMD Ryzen processor or building a new gaming PC, Geeks Callout London can help.
We support gaming PCs with motherboard failures, processor installation issues, BIOS problems, charging and power faults, cooling problems and other hardware-related issues.
Our team can assist with diagnosis, compatible component selection, installation, upgrades and testing.
If you’ve attempted an upgrade and your computer won’t start, avoid repeatedly removing and reinstalling the processor — especially if you suspect damaged socket contacts or pins.
Call Geeks Callout London on 0203 290 5190
Author 's Profile
Aamir.M
Aamir Mehmood is a Senior IT Consultant & Technology Writer with over 15+ years of experience and one of the founders of Geeks Callout, an award-winning London-based IT support company specialising in PC, MacBook, and gaming repairs. He is recognised for delivering reliable, customer-focused IT solutions. Under his leadership, Geeks Callout has won multiple honours, including the 2023 Business Excellence Award and the 2025 SME UK Enterprise Award. Aamir also writes insightful articles to simplify complex technology, making him a trusted voice in London’s IT community.
