u/Ducanh317

Hi everyone, my PC has been hard freezing whenever I put the GPU under load (games, benchmarks). I’ve done extensive troubleshooting and I’m fairly confident it’s the PSU, but wanted a second opinion before buying.

Specs:

•	CPU: AMD Ryzen 7 5700X3D (installed Nov 2025)  
•	GPU: RTX 3070 (power limit set to 180W)  
•	RAM: 32GB Corsair CMK16GX4M1E3200C16 DDR4 3200MHz dual channel, XMP enabled  
•	Motherboard: Gigabyte B450 AORUS PRO (Rev 1.0)  
•	PSU: Corsair CV650 650W 80+ Bronze (purchased summer 2020 — 6 years old)  
•	OS: Windows 11

Symptoms:

•	PC hard freezes under GPU load — image stays frozen on screen, keyboard and mouse lose power gradually (lights flicker then slowly fade out), fans keep running, must hold power button to shut down  
•	Started suddenly today — was playing BF6 fine last night  
•	Also freezes during Superposition benchmark  
•	Recently froze while just browsing with minimal tabs open  
•	For the past 6 months, PC occasionally doesn’t recognize keyboard on boot — have to unplug and replug after restart

Key observation: When launching Superposition, the mouse RGB flickers then slowly dims and turns off right before the freeze — suggesting gradual voltage drop on the 5V rail rather than a sudden cutoff.

What I’ve already ruled out:

•	Temperatures: GPU 37C, CPU 67C at time of crash — not overheating  
•	GPU drivers: DDU clean install + fresh driver 596.36 — still freezes  
•	RAM: MemTest86 ran 2+ hours, Pass 2/4 complete, Errors = 0  
•	GPU hardware fault: no artifacts, image stays frozen not black screen  
•	GPU reseated, all PSU cables replugged — still freezes  
•	GPU power limit reduced to 80% — still freezes in Superposition  
•	BIOS updated from F64g to F67a latest for B450 AORUS PRO — still freezes  
•	WHEA-Logger: 0 events — no CPU, PCIe, or memory hardware errors

Event Viewer findings:

•	Kernel-Power Event ID 41 at every crash  
•	BugcheckCode = 0 — system lost power before Windows could write a crash dump  
•	RTUsbSwSrvc (Realtek USB service) terminated unexpectedly at crash time  
•	No WHEA-Logger events at all

Hi everyone, my PC has been hard freezing whenever I put the GPU under load (games, benchmarks). I’ve done extensive troubleshooting and I’m fairly confident it’s the PSU, but wanted a second opinion before buying.

Specs:

•	CPU: AMD Ryzen 7 5700X3D (installed Nov 2025)  
•	GPU: RTX 3070 (power limit set to 180W)  
•	RAM: 32GB Corsair CMK16GX4M1E3200C16 DDR4 3200MHz dual channel, XMP enabled  
•	Motherboard: Gigabyte B450 AORUS PRO (Rev 1.0)  
•	PSU: Corsair CV650 650W 80+ Bronze (purchased summer 2020 — 6 years old)  
•	OS: Windows 11

Symptoms:

•	PC hard freezes under GPU load — image stays frozen on screen, keyboard and mouse lose power gradually (lights flicker then slowly fade out), fans keep running, must hold power button to shut down  
•	Started suddenly today — was playing BF6 fine last night  
•	Also freezes during Superposition benchmark  
•	Recently froze while just browsing with minimal tabs open  
•	For the past 6 months, PC occasionally doesn’t recognize keyboard on boot — have to unplug and replug after restart

Key observation: When launching Superposition, the mouse RGB flickers then slowly dims and turns off right before the freeze — suggesting gradual voltage drop on the 5V rail rather than a sudden cutoff.

What I’ve already ruled out:

•	Temperatures: GPU 37C, CPU 67C at time of crash — not overheating  
•	GPU drivers: DDU clean install + fresh driver 596.36 — still freezes  
•	RAM: MemTest86 ran 2+ hours, Pass 2/4 complete, Errors = 0  
•	GPU hardware fault: no artifacts, image stays frozen not black screen  
•	GPU reseated, all PSU cables replugged — still freezes  
•	GPU power limit reduced to 80% — still freezes in Superposition  
•	BIOS updated from F64g to F67a latest for B450 AORUS PRO — still freezes  
•	WHEA-Logger: 0 events — no CPU, PCIe, or memory hardware errors

Event Viewer findings:

•	Kernel-Power Event ID 41 at every crash  
•	BugcheckCode = 0 — system lost power before Windows could write a crash dump  
•	RTUsbSwSrvc (Realtek USB service) terminated unexpectedly at crash time  
•	No WHEA-Logger events at all