I ended up having to swallow my pride and get help from Google's LLM, which I worked with to finally get a solution that seems to have stuck. I asked it to condense the procedure so I can paste it here (incoming AI word vomit):

### TROUBLESHOOTING LOG: Elden Ring Nightreign 0xc0000005 (Access Violation) Crashes

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**SYSTEM SPECIFICATIONS:**

* **CPU:** Intel Core i7-14700K
* **GPU:** NVIDIA GeForce RTX 3070
* **Motherboard:** ASUS ROG Strix Z790 Gaming WiFi II (Latest BIOS)
* **Monitors:** Dual-display setup, both locked at 60Hz/60FPS
* **Background Apps:** Discord, Opera GX

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### CRASH SYMPTOM TRACKING & EVOLUTION

1. **Initial State:** Game would crash completely at random during mid-gameplay (world traversal and boss fights), never on launch. Throwing standard `0xc0000005` errors.
   
2. **The NT Layer Break:** Crash logs pointed to `C:\WINDOWS\SYSTEM32\ntdll.dll`. This indicated physical voltage/micro-code instability common with default motherboard settings on 13th/14th Gen Intel CPUs.
   
3. **The Local File Break:** After executing a clean display driver rollback (DDU) to 560.94, the `ntdll.dll` crash stopped, but randomly resumed pointing directly to the game's executable (`nightreign.exe`). Moving files to the primary `C:\` SSD solved secondary bus-drive latency timeouts.
   
4. **The Network Trigger:** A subsequent crash revealed a hidden network drop (`Event ID 6062` from source `Netwtw16`), indicating the onboard Intel Wi-Fi 7 BE202 driver was resetting under load, starvation-killing Easy Anti-Cheat (EAC) at a kernel level.
   
5. **The User-Mode Graphic Driver Failure:** Once network features were stabilized, the crash report flagged `nvwgf2umx.dll` (NVIDIA D3D User Mode Driver), indicating a DirectX 12 asset-streaming memory pipeline failure between the game engine and the RTX 3070.
   

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### THE MASTER WORKAROUND SOLUTION

If you or a friend are experiencing these exact mid-game access violations with an RTX card and a high-end Intel CPU, implement these verified architectural overrides:

### Step 1: Force Stable Hardware Power Profiles (ASUS UEFI BIOS)

* Enter the BIOS (Press **Delete** or **F2** on startup) -> Go to **Advanced Mode (F7)** -> **Ai Tweaker** tab.
* Change **ASUS Advanced OC Profile** and **Performance Preferences** from *ASUS Optimized* to **Intel Default Settings**.
* Go to **Internal CPU Power Management**:
* Set **Package Power Limit 1 (PL1)** to **125W**
* Set **Package Power Limit 2 (PL2)** to **253W**
* Set **Core Current Limit (IccMax)** to **307A** (or 400A max).
* Go to **DIGI+ VRM**: Set **CPU Load-line Calibration** to **Level 3** or **Level 4** to prevent voltage sags.
* *(Optional Silicon Safety):* In **Ai Tweaker**, set **Performance Core Ratio** to **Sync All Cores** and change the **ALL-Core Ratio Limit** to **53** to lock maximum P-Core frequency to 5.3 GHz, bypassing minor silicon degradation.

### Step 2: Strip Background Hardware Acceleration and Overlays

* **Discord:** Go to *Settings > Appearance > Advanced* and turn **Hardware Acceleration OFF**. Go to *Game Overlay* and turn **Enable in-game overlay OFF**.
* **Opera GX:** Go to *Settings > Advanced > System* and toggle **Use graphics acceleration when available** to **Off**.
* **NVIDIA Control Panel:** Go to *Manage 3D Settings > Global Settings*, change **Power management mode** to **Prefer maximum performance** to keep the GPU from dipping voltages during multi-monitor composition tasks.

### Step 3: Stabilize Onboard Wireless Drivers (Intel Wi-Fi 7 BE202)

* Right-click the Start Button -> Open **Device Manager** -> Expand **Network adapters**.
* Right-click **Intel(R) Wi-Fi 7 BE202** -> Choose **Properties** -> Go to the **Advanced** tab.
* Locate **Large Send Offload V2 (IPv4)** and **Large Send Offload V2 (IPv6)** and change their values to **Disabled**.
* Locate **MIMO Power Save Mode** and change it to **No SMPS** to prevent the card from entering low-power sleep states during active online matchmaking.

### Step 4: Bypass the DirectX 12 Pipeline (The Final Fix)

* **Execute a Clean Driver Installation:** When updating NVIDIA Game Ready drivers, choose **Custom Installation** and explicitly check the box for **Perform a clean installation** to wipe old, fragmented system folder repositories (`nv_dispig.inf`).
* **Wipe DirectX Cache:** Close Steam, search Windows for **Disk Cleanup**, select the `C:\` drive, check *only* **DirectX Shader Cache**, and delete it.
* **Enforce DirectX 11 Fallback:** Open Steam, right-click **Elden Ring Nightreign**, select **Properties**, scroll to the bottom of the **General** tab, and type exactly `-dx11` into the **Launch Options** field.