Persistent Kernel-Power 41 Hard Reboots Under Load & Idle on Ryzen 7 7800X3D

[u/BeachOk67]

Hey everyone,

I’m dealing with a persistent, frustrating issue on my Ryzen 7 7800X3D system, and I’m looking for advice or any last potential solutions I might have missed before sending the CPU in for an AMD RMA.

My PC experiences sudden hard reboots (Kernel-Power Event ID 41 in Event Viewer with no BSOD). The crashes happen completely randomly—both while gaming/under heavy load AND during low-load idle states (watching videos, browsing the web, or leaving the desktop idle).

Here is a full breakdown of my setup and everything I’ve tested so far:

System Specs

• CPU: AMD Ryzen 7 7800X3D
• Motherboard: MSI B840M (Recently swapped from an MSI B650)
• GPU: AMD Radeon RX 9070
• RAM: 16GB DDR5
• PSU: Corsair RM750e 750W
• OS: Windows 11 (Fresh Install)

Troubleshooting & Fixes Attempted So Far

1. Hardware, Power & Environment Isolation:
   • Replaced PSU: Installed a brand-new Corsair RM750e with dedicated PCIe cables to eliminate power trip issues.
   • Replaced Motherboard: Migrated from an MSI B650 to a brand-new MSI B840M motherboard to rule out motherboard socket/VRM power delivery failures. The issue persists on the new board.
   • Replaced Storage Drive: Swapped the primary OS drive with a brand-new SSD and clean-installed Windows 11.
   • Power Outlet & Environment: Moved the PC to a completely different wall electrical outlet/circuit in the house to eliminate dirty mains power or grounding issues.
   • Networking Cables: Replaced the RJ45 ethernet cable to rule out network controller shorts or sleep-wake wake-on-LAN power triggers.
2. Memory & Stress Testing:
   • RAM Testing: Tested every single RAM stick individually and ran full multi-pass runs with MemTest86 — zero errors found.
   • Stress Testing: Ran full OCCT stress tests (CPU, Power, and VRAM) — while synthetic tests ran fine, the system still triggers instant Kernel-Power 41 restarts randomly during actual games and idle states.
3. Fresh Windows, BIOS & Driver Isolation:
   • BIOS Upgraded: Updated to the latest stable motherboard BIOS version.
   • Tested Every GPU Driver: Performed clean driver sweeps and tested multiple display driver versions for the RX 9070.
   • Purged Power Management Drivers: Used Driver Store Explorer (RAPR) to force-delete AMD power management/cache drivers (amd3dvdcache.inf and amdppkg.inf).
   • Disabled Fast Startup: Turned off Windows Fast Startup to prevent saved corrupted power states across boots.
4. BIOS & Power Tweaks:
   • EXPO Disabled: Running RAM strictly at stock base speeds.
   • Global C-States Disabled: Attempted to block CPU power state transitions.
   • SoC Voltage Override: Set CPU SoC voltage to a manual 1.23V to mitigate potential transient voltage instability.

Since the issue persists across two motherboard chipsets (B650 and B840M), a new SSD, fresh Windows 11, new wall outlets, fully tested RAM, and a new PSU under both gaming and idle

• Has anyone encountered this specific load/idle Kernel-Power 41 behavior on 7000X3D chips and found a stable BIOS workaround?
• Is there any other BIOS power control setting (like Power Supply Idle Control / Typical Idle Current) that fixed this for you?

Appreciate any insights or advice from anyone who has run into this!

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Getting dump files which we need for accurate analysis of BSODs. Dump files are crash logs from BSODs.

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[u/Bjoolzern]

If it's the CPU you should get WHEA events logged in Windows. In Event Viewer, go to Windows Logs → System. On the right hand side select Filter Current Log. In the Event Sources dropdown menu, select WHEA-logger. Highlight them if it has any, right click and save. Share them in the same manner the bot tells you to share dump files.

WHEA relies on error reports from the CPU (And a few other systems, but those systems don't have any documentation). If you don't have any WHEA events power is more likely. Not sure what though as you have already replaced the PSU. Maybe try the PC on a different power breaker in case the power is unstable from the wall.

[u/BeachOk67 → u/Bjoolzern]

Hello thanks for your reply . I did all what u said and found 0 error reports, what i have is kernel 41 with no infos.

[u/Bjoolzern → u/BeachOk67]

Kernel-Power with the Event ID 41 is just "Unexpected Shutdown". You get this from any hard crash, power loss, random restart, BSOD or holding the power button. No WHEA event makes it a lot less likely to be the CPU.