Gaming PC DRAM Light Fault Fixed for a Customer in Notting Hill, London
Some gaming PC faults are straightforward. A faulty RAM stick, a loose cable, an overheating CPU or a failed power supply can usually be diagnosed with a clear testing process.
But every now and again, a repair comes in that surprises even experienced engineers.
This case study is based on a real gaming PC repair completed by Geeks Callout London for a customer based in Notting Hill, London. The desktop computer was showing a constant DRAM light on the motherboard and refused to boot properly. At first, everything pointed towards a RAM or motherboard problem. But after detailed testing in our lab, the actual cause turned out to be something far less expected: a faulty Corsair MP700 PRO XT NVMe SSD.
It was one of those unusual cases where proper diagnosis made all the difference.
The Gaming PC Specification
This was not a basic desktop computer. The customer had built the system himself around high-performance parts, including:
Intel Core i9 13th generation processor
ASRock Z790 Steel Legend WiFi motherboard
Cooler Master liquid cooler
NVIDIA GeForce RTX 5080 graphics card
Corsair MP700 PRO XT NVMe SSD
Crucial 500GB NVMe SSD
Windows 11
The PC had been working for around four months before the fault appeared. Then one day, it stopped booting properly and began showing the motherboard DRAM warning light.
For a custom gaming PC, a DRAM light normally makes you think of memory first. That is why this case became particularly interesting.
The Fault: DRAM Light and No Proper Boot
The customer contacted us after the PC stopped starting normally. The motherboard was showing a DRAM light, which usually suggests an issue with the RAM, memory training, CPU memory controller, motherboard BIOS or sometimes the motherboard itself.
Our engineer attended the customer’s home in Notting Hill to carry out initial checks.
The first steps were the obvious ones:
removing and reseating the RAM
cleaning the RAM contacts
testing RAM sticks in different slots
trying different RAM combinations
checking motherboard connections
resetting the motherboard BIOS
clearing CMOS
checking visible signs of damage
Despite all this, the same DRAM light kept returning. The system still refused to boot properly.
At this point, it was clear that this was not going to be a simple RAM reseat or BIOS reset.
Why We Brought the PC to the Lab
Some gaming PC repairs can be completed on-site, but this fault needed deeper diagnosis. The PC was collected from Notting Hill and brought to our repair lab for proper testing.
This is often the safest approach with custom-built gaming computers. High-end systems have several parts working together: CPU, RAM, GPU, motherboard, NVMe drives, cooling, BIOS and power delivery. If one part behaves strangely, it can make another component look faulty.
In this case, the motherboard was pointing towards DRAM, but our engineer did not want to assume the RAM was the cause without testing the full system.
The Unusual Diagnosis: Faulty NVMe Causing DRAM Light
After further testing in the lab, our gaming PC engineer found the real cause.
The issue was linked to the Corsair MP700 PRO XT NVMe SSD.
This was unusual because most people would not expect an NVMe storage drive to cause a motherboard DRAM warning light. Normally, if an NVMe fails, you might expect Windows boot errors, missing drive messages, slow loading, freezing, or installation problems.
But in this case, the system was getting stuck earlier in the boot process and showing the DRAM light.
After a full round of diagnostics, the breakthrough came when we removed the Corsair MP700 PRO XT drive. Once that drive was removed, the computer started booting normally again.
That confirmed the fault.
The RAM was not the problem. The graphics card was not the problem. The motherboard was not dead. The faulty NVMe drive was stopping the system from completing its startup process and causing a misleading DRAM warning.
Why This Was a Tricky Fault
This repair was a good reminder that motherboard diagnostic lights do not always tell the full story.
A DRAM light is helpful, but it does not guarantee that the RAM is faulty. It only shows where the board is getting stuck during its checks. Sometimes another component can interfere with the boot process and make the motherboard report a misleading fault.
In this case, the Corsair MP700 PRO XT NVMe was causing the system to behave as though there was a memory-related fault.
This is exactly why proper testing matters. If we had simply replaced the RAM or motherboard, the customer could have spent a lot of money and still had the same issue.
Checking the Cooling System
While diagnosing the boot issue, we also checked the cooling setup. The customer had fitted a Cooler Master liquid cooler, but testing showed the system was still running hotter than it should.
With a 13th generation Intel i9 processor, cooling is very important. These processors can run hot under load, especially inside a gaming PC with a powerful graphics card and high-speed storage.
After checking the system, we recommended replacing the existing cooler with an ARCTIC 240mm liquid cooler. This gave the processor a more stable cooling setup and helped reduce the risk of overheating during gaming or heavy use.
The customer approved the work, and we replaced the cooling system as part of the repair.
Windows 11 Installed on the Crucial NVMe
The customer had two NVMe drives installed:
the faulty Corsair MP700 PRO XT
a working Crucial 500GB NVMe
Once the Corsair drive was confirmed faulty, we removed it from the boot process and installed Windows 11 on the Crucial NVMe.
After installation, the system booted normally, responded properly and no longer got stuck at the DRAM light stage.
We then tested the PC again to make sure the fault was genuinely resolved and not simply hidden temporarily.
Final Testing and Result
After removing the faulty Corsair MP700 PRO XT, replacing the cooling system with an ARCTIC 240mm liquid cooler, and installing Windows 11 on the Crucial NVMe, the gaming PC was finally working properly again.
The system was:
booting normally
no longer stuck on the DRAM warning light
running Windows 11 from the Crucial NVMe
more stable during testing
better cooled with the ARCTIC liquid cooler
ready to return to the customer
For the customer, this was a big relief. The PC had been built only a few months earlier, and because the DRAM light kept appearing, it looked like it could be a serious motherboard or RAM fault.
Instead, the issue was traced to a faulty NVMe drive after proper diagnostics.
What This Case Shows
This Notting Hill gaming PC repair is a perfect example of why custom PC diagnosis should not be rushed.
A motherboard warning light is a useful clue, but it is not always the final answer. In this case, the DRAM light pointed us towards the memory side of the system, but the real fault was elsewhere.
The most important lessons from this repair are:
a DRAM light does not always mean faulty RAM
NVMe drive faults can sometimes cause strange boot behaviour
custom gaming PCs need structured diagnosis
high-end Intel i9 systems need strong cooling
replacing parts without testing can waste money
lab testing can reveal faults that are difficult to confirm on-site
This was not a common fault, and it is exactly the kind of repair where experience matters.
Common Reasons a Gaming PC Shows a DRAM Light
A DRAM warning light can be caused by several issues, including:
faulty RAM
RAM not seated correctly
incompatible memory
incorrect BIOS settings
failed memory training
motherboard BIOS problem
CPU socket or memory controller issue
motherboard fault
power delivery issue
in rare cases, another component interrupting the boot process
This case shows that storage devices, including NVMe drives, should not be ignored during deeper diagnostics.
When Should You Get a Gaming PC Checked?
You should consider professional diagnosis if your gaming PC is showing signs such as:
motherboard DRAM light staying on
PC powers on but does not display
system turns on but does not boot into Windows
PC gets stuck during startup
repeated BIOS or boot failure
Windows installation keeps failing
PC worked before but suddenly stopped booting
high-end custom build becomes unstable after a few months
The sooner the system is tested properly, the easier it is to avoid unnecessary part replacements.
Gaming PC Repair in Notting Hill, London
At Geeks Callout London, we repair custom gaming PCs, high-end desktops and self-built computers with boot faults, DRAM lights, overheating, no-display problems, failed NVMe drives, Windows installation issues and cooling problems.
This gaming PC from Notting Hill, London came in with a misleading DRAM fault, but our engineer traced the real issue to a faulty Corsair MP700 PRO XT NVMe SSD. After removing the faulty drive, installing Windows 11 on the Crucial NVMe and upgrading the cooling system, the PC was running normally again.
If your gaming PC is showing a DRAM light, refusing to boot or behaving strangely after a recent build, it may not be the obvious part at fault. A proper diagnosis can save time, money and unnecessary stress.
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.
