project 03

PC Builds & Troubleshooting

Building and fixing gaming PCs is what actually got me into cybersecurity — figuring out why something won't boot teaches you more than any textbook chapter on it does.

The build that wouldn't boot

A gaming PC that had run fine for years suddenly refused to power on — no fans, no lights, nothing. What followed was a real lesson in not trusting the first test that "passes."

Motherboard, GPU, and cooler laid out on a desk during troubleshooting
Board pulled and bench-tested outside the case to eliminate variables.

The standard elimination process — jumping the power switch header, a paperclip test on the PSU, a full breadboard test outside the case — pointed to a dead motherboard. A replacement board was ordered and installed. It showed the exact same symptom: total silence. That didn't fit — a brand-new board failing identically pointed to something outside the board entirely.

The real culprit turned up when testing with a second, known-good spare PSU: both the original board and the replacement board powered on fine with it. The original PSU had passed the paperclip test — which only proves a PSU can spin its own fan with no load — but couldn't actually sustain a motherboard under real load. A separate, unrelated mistake (the front-panel power switch connector seated on the wrong pins from the very start) had made the very first diagnostic test meaningless, cascading into a wrong conclusion that took a full board swap to eventually disprove.

// the actual fix Replacement motherboard: Gigabyte B550 Phantom Gaming 4/AC. The board that isolated the fault was an old Montech Century PSU freed up from Build 1's own power-supply upgrade — reused here as the known-good test unit, then kept in permanently.
Final component list (post-fix)
CPUAMD Ryzen 5 5500, 3.6 GHz 6-core
CPU CoolerCooler Master A71C
MotherboardGigabyte B550 Phantom Gaming 4/AC (replaced original ASRock B550M-C)
MemoryCorsair Vengeance RGB Pro 32 GB (2x16GB) DDR4-3200 CL16
StorageKingston NV3 500 GB M.2 NVMe
Video CardXFX Speedster QICK 210 Radeon RX 6500 XT 4GB
CaseLian Li A3-mATX Mini Tower
Power SupplyMontech Century (reused, ex-Build 1) — replaced the failed original unit

Builds

A few of the systems I've built and specced out — mine, and a couple for friends.

MAIN PC
Main PC build with ROG branding and white ARGB lighting
CPUAMD Ryzen 7 7800X3D
CPU CoolerThermalright Wonder Vision 360 UB ARGB AIO
MotherboardASUS ROG STRIX X870E-E Gaming WiFi7
MemoryTEAMGROUP T-Force Delta RGB 32GB DDR5-6000 CL30
StorageKingSpec XG7000 2TB + TEAMGROUP T-Force G70 PRO Graphene 2TB
Video CardSapphire NITRO+ Radeon RX 9070 XT 16GB
CaseCorsair 3500X ATX Mid Tower
Power SupplyMontech CENTURY II 850W 80+ Gold
Build 1
Build 1 — RGB gaming PC with tempered glass panel
CPUAMD Ryzen 7 7800X3D
CPU CoolerGigabyte AORUS WATERFORCE X 60.07 CFM AIO
MotherboardGigabyte B650 AORUS ELITE AX
MemoryTEAMGROUP T-Force Delta RGB 32GB DDR5-6000 CL30
StorageKingSpec XG7000 2TB + TEAMGROUP T-Force G70 PRO 2TB NVMe
Video CardASRock Phantom Gaming OC Radeon RX 7800 XT 16GB
CaseMontech KING 95 PRO ATX Mid Tower
Power SupplyMontech CENTURY G5 750W 80+ Gold
Build 2
Build 2 with purple ARGB lighting and Hellhound GPU
CPUAMD Ryzen 5 7500F
CPU CoolerThermalright Aqua Elite V3 AIO
MotherboardGigabyte B650 EAGLE AX
MemorySilicon Power XPOWER Zenith Gaming 32GB DDR5-6000
StorageTEAMGROUP T-Force G50 1TB NVMe
Video CardPowerColor Hellhound OC Radeon RX 7600 XT 16GB
CaseThermaltake View 380 ARGB Mid Tower
Power SupplyMSI MAG A650GL 650W 80+ Gold
Build 3
Build 3 in a white case with Intel Arc GPU
CPUAMD Ryzen 5 7500F
CPU CoolerID-COOLING FROZN A410 ARGB
MotherboardGigabyte B650 EAGLE AX
MemoryPatriot Viper Elite 5 RGB 32GB DDR5-6000
StorageTEAMGROUP T-Force G70 PRO Graphene 1TB NVMe
Video CardIntel Arc B580 Limited Edition 12GB
CaseCorsair 3500X ARGB Mid Tower (white)
Power SupplyMSI MAG A650GL 650W 80+ Gold