Title: PC random black screen shutdowns (no BSOD) – likely GPU? Need second opinion

Hi, I’m having persistent random shutdowns and I’m running out of ideas. I’d really appreciate a second opinion before I RMA my GPU.

Specs:

• CPU: AMD Ryzen 5 7500F
• Motherboard: MSI B650 Gaming Plus WiFi
• GPU: PowerColor RX 9060 XT Hellhound 16GB
• RAM: 16GB DDR5 (tested at 4800 and 4400, no EXPO)
• PSU: MSI A850GL 850W Gold (recently upgraded from 550W)
• OS: Windows 11

Problem:

• PC randomly goes black screen and instantly restarts
• No BSOD, no warning
• Sometimes a short “chirp” sound before crash (not always)
• Happens mostly when launching or playing games (LoL, GTA V)
• Sometimes within 30 seconds, sometimes after \~1 hour

Event Viewer errors:

• “The server did not register with DCOM within the required timeout”
• “Error creating dump file / BugCheckProgress 0x00020020”
• “Dump file initialization failed”

What I’ve already tried:

• Switched PSU (550W → 850W)
• Updated BIOS to latest
• Disabled EXPO, lowered RAM to 4800 and even 4400
• Tested RAM (no errors)
• Set PCIe from Gen4 → Gen3 (seemed slightly more stable but still crashes)
• Lowered SoC Voltage from \~1.256V to 1.20V (crashes take longer but still happen)
• Temps are fine (CPU/GPU under \~60°C)
• Reinstalled GPU drivers
• Checked cables and connections

Current behavior:

• System is more stable than before, but still crashes eventually
• Now it can last up to \~1 hour before black screen reboot

My suspicion:
At this point I’m thinking it’s a faulty or unstable GPU, since:

• crashes are under GPU load
• no BSOD (system dies too fast)
• dump files fail to generate
• PSU and RAM already ruled out

Question:
Does this look like a GPU hardware issue to you, or is there anything else I should test before RMA?

Thanks in advance 🙏