Gaming PC Diagnostics
When your gaming PC is not performing the way it should, guessing at the problem wastes time and money. Stewart Electronics offers a methodical diagnostics service that isolates hardware, firmware, and software faults so you know exactly what is wrong before spending a dollar on parts or repairs. Whether your system will not boot at all, crashes mid-game, or just feels slower than it used to, our diagnostic process gives you clear answers and a path forward.
Our Diagnostic Process
We do not just run a single scan and call it done. Stewart Electronics follows a structured diagnostic methodology designed to catch issues that surface-level checks miss:
- Visual inspection — We open the case and inspect for obvious problems: bulging capacitors, burnt components, loose cables, excessive dust buildup, and signs of liquid damage or pest intrusion.
- Hardware isolation testing — We strip the system down to its minimum bootable configuration (CPU, one stick of RAM, and integrated or dedicated GPU) and rebuild one component at a time. This systematic approach pinpoints exactly which component is causing instability.
- Power supply analysis — We test PSU voltage rails under load using a multimeter and verify that the unit delivers stable power within ATX specification tolerances. Marginal power supplies are one of the most common and most overlooked causes of random crashes.
- Thermal imaging and monitoring — We use thermal monitoring software and infrared measurement to identify hotspots on the CPU, GPU, and VRM. Overheating components throttle performance or trigger shutdowns, and poor thermal paste application is a frequent culprit.
- Memory testing — We run MemTest86 for multiple passes to check for RAM errors that cause blue screens, application crashes, and data corruption. We test each stick individually to isolate faulty modules.
- Storage health analysis — We check SMART data on all drives, run read/write benchmarks, and look for signs of impending failure such as reallocated sectors, pending sectors, or abnormal wear leveling on SSDs.
- GPU stress testing — We use tools like FurMark and 3DMark to push the graphics card to its limits while monitoring for artifacts, driver crashes, and thermal throttling.
- Software and driver audit — We check for corrupted Windows installations, outdated or conflicting drivers, malware, and misconfigured BIOS settings that may be contributing to instability.
Common Issues We Find
After diagnosing hundreds of gaming PCs, Stewart Electronics has identified the issues that come up most frequently:
- Blue screen errors (BSOD) — Often caused by failing RAM, unstable overclocks, corrupted drivers, or storage errors. The specific stop code tells us where to focus our investigation.
- Random crashes and freezes — Typically traced to power delivery problems, overheating components, or marginal memory modules that pass casual use but fail under gaming loads.
- Overheating and thermal throttling — Dried-out thermal paste, clogged heatsink fins, failed case fans, and poor airflow configurations are the usual suspects. These issues degrade performance gradually, making them easy to miss until the system starts shutting down.
- Slow performance and long load times — Sometimes the hardware is fine but a failing hard drive, background malware, or Windows bloat is dragging the system down. We differentiate between hardware limitations and software problems.
- Boot failures and POST errors — No POST situations can stem from dead power supplies, failed CPUs, incompatible RAM, or corrupted BIOS firmware. We use debug LEDs, speaker codes, and systematic component swapping to identify the root cause.
- GPU artifacts and display issues — Visual glitches, screen tearing outside of normal behavior, and driver timeouts can indicate a failing graphics card, overheating VRAM, or a power delivery issue on the GPU board.
What You'll Receive
Every Stewart Electronics diagnostic concludes with a detailed report that gives you full visibility into your system's health:
- Findings summary — A plain-language explanation of what we found, what is causing your symptoms, and whether the issue is hardware or software related.
- Component health status — Individual assessments for your CPU, GPU, RAM, storage drives, power supply, and cooling system, including benchmark scores and thermal readings.
- Recommended repairs — Specific, prioritized recommendations with estimated costs so you can make an informed decision about next steps.
- Upgrade suggestions — If your system would benefit from a component upgrade rather than a repair, we will let you know where your money would have the most impact on performance.
Our diagnostic fee is applied as a credit toward any repair or upgrade work you choose to have us perform. You get answers either way, and if you decide to move forward with Stewart Electronics, the diagnostic pays for itself.