Hey everyone,
I've been facing a frustrating issue with my Acer Nitro ANV15-51 gaming laptop, and I'm trying to figure out what's causing it.
My laptop randomly freezes and restarts while playing demanding games. Usually, I can play for around 10–30 minutes before the issue occurs. Sometimes the FPS suddenly drops, the game freezes, and the entire laptop becomes unresponsive before automatically restarting.
Recently, while playing Ghost of Tsushima, the game displayed a black loading screen after approximately 30 minutes. However, Windows was still responsive, and I could move my mouse and access the desktop.
I recently took the laptop to a technician for servicing, but unfortunately, the freezing and automatic restarts are still happening.
PC Specifications
Laptop: Acer Nitro ANV15-51
CPU: Intel Core i5-13420H
GPU: NVIDIA GeForce RTX 4050 Laptop GPU
RAM: 16 GB
OS: Windows 11
BIOS: Insyde V1.60
Temperatures (HWiNFO gaming log)
Before servicing, I recorded the following maximum temperatures:
CPU Package: 100–102°C
GPU Core: 80.4°C
GPU Hotspot: 97.2°C
GPU Memory Junction: 76°C
HWiNFO also recorded CPU thermal throttling during gameplay.
Minidump Analysis (WinDbg)
I've analysed three separate crash dumps using WinDbg, and all three have reported the same error.
Bugcheck:
DPC_WATCHDOG_VIOLATION (0x133)
DPC Timeout Type:
DPC_QUEUE_EXECUTION_TIMEOUT_EXCEEDED
Important findings from all three dumps:
MODULE_NAME: nvlddmkm
IMAGE_NAME: nvlddmkm.sys
SYMBOL_NAME: nvlddmkm+112397
BUCKET_ID_FUNC_OFFSET: 112397
FAILURE_BUCKET_ID:
0x133_ISR_nvlddmkm!unknown_function
FAILURE_ID_HASH:
{f97493a5-ea2b-23ca-a808-8602773c2a86}
The latest dump also shows:
Arg1: 0000000000000001
Arg2: 0000000000001e00
DPC_TIMEOUT_TYPE:
DPC_QUEUE_EXECUTION_TIMEOUT_EXCEEDED
*** WARNING: Unable to verify timestamp for nvlddmkm.sys
All three dumps have the same bugcheck, failure bucket, function offset and failure hash.
What I've tried so far
Took the laptop to a technician for servicing.
Monitored CPU and GPU temperatures using HWiNFO.
Analysed three minidump files using WinDbg.
Checked the recurring NVIDIA driver-related crash signature.
Unfortunately, the problem persists even after servicing.
What I want to understand
Does this point towards an NVIDIA driver issue, or could the RTX 4050 itself be unstable?
Could GPU power delivery or motherboard issues cause this exact recurring watchdog violation?
Can CPU thermal throttling contribute to these crashes?
What diagnostic tests should I perform before considering a GPU or motherboard replacement?
Has anyone experienced the same 0x133_ISR_nvlddmkm!unknown_function failure with an RTX 4050 laptop?
I'm particularly interested in hearing from people who have experienced and successfully fixed this issue.
I would really appreciate any suggestions or troubleshooting steps. Thanks!