Sudden black screen, when playing demanding games.
So I bought a new PC about a week ago and I've been pulling my hair out ever since. Whenever I try to play something demanding, the fans suddenly spin up to max, I hear a click, and the whole thing just shuts off and reboots. No BSOD, no warning, nothing.
Specs:
- Ryzen 7 7800X3D
- GIGABYTE RX 9070 XT GAMING OC 16G
- ASUS PRIME B650M-R
- Corsair Vengeance DDR5-6000 32GB CL36
- Corsair RM750e 750W (2025)
- Windows 11
It started with Hogwarts Legacy crashing at launch every single time. Figured it was the usual AMD/DX12 shader compilation stuff, but then GTA V started doing it too. Rust, LoL and Valheim all run completely fine though, so it's clearly load-dependent.
I've gone pretty deep on troubleshooting at this point:
- Latest AMD drivers + DDU clean reinstall
- GPU power limit at -30% in Adrenalin
- Proper undervolt (-75mV, -200MHz)
- Two separate PCIe cables, not daisy-chained (checked physically)
- Latest BIOS
- RAM was already on JEDEC, EXPO never enabled
Checked Event Viewer after every crash — it's Kernel-Power Event ID 41 every time, BugcheckCode 0, all parameters 0x0. No minidump generated at all. That to me means Windows never even had time to react, the power just disappeared.
To rule out it being game-specific I ran 3DMark Time Spy Extreme stress test. Crashed on loop 3. Same event in the log.
At 750W with the power limit applied I'm probably pulling around 380W actual load, so it shouldn't be a capacity issue on paper. But something is clearly triggering the PSU's protection circuit.
Is this just a dead unit or is the RM750e known to be twitchy with the 9070 XT? Has anyone else had this combo? I'm about to file an RMA with Corsair but wanted to check if I'm missing something obvious before I do.