A long-standing issue that has been troubling me.

[hijack]

I have been plagued by an issue for over a year. I have a machine with 3x2080ti GPUs, and when hashcat starts working, I occasionally encounter the error "NvAPI_GPU_GetPerfPoliciesInfo(): NVAPI_NVIDIA_DEVICE_NOT_FOUND". The only solution is to force a power-off shutdown. I initially thought it might be a motherboard or GPU problem, but even with a brand new motherboard or GPU, the same error persists. I am seeking advice on how to resolve this issue. I humbly request everyone's assistance and I am immensely grateful!

[Snoopy]

I have been plagued by an issue for over a year. I have a machine with 3x2080ti GPUs, and when hashcat starts working, I occasionally encounter the error "NvAPI_GPU_GetPerfPoliciesInfo(): NVAPI_NVIDIA_DEVICE_NOT_FOUND". The only solution is to force a power-off shutdown. I initially thought it might be a motherboard or GPU problem, but even with a brand new motherboard or GPU, the same error persists. I am seeking advice on how to resolve this issue. I humbly request everyone's assistance and I am immensely grateful!

please post output of hashcat -I

[Chick3nman]

Are you using PCIE risers?

[hijack]

Are you using PCIE risers?

Hello, I'm not using risers. The graphics cards are directly plugged into the PCIe interface.

[hijack]

I have been plagued by an issue for over a year. I have a machine with 3x2080ti GPUs, and when hashcat starts working, I occasionally encounter the error "NvAPI_GPU_GetPerfPoliciesInfo(): NVAPI_NVIDIA_DEVICE_NOT_FOUND". The only solution is to force a power-off shutdown. I initially thought it might be a motherboard or GPU problem, but even with a brand new motherboard or GPU, the same error persists. I am seeking advice on how to resolve this issue. I humbly request everyone's assistance and I am immensely grateful!

please post output of hashcat -I

hashcat (v6.2.5) starting in backend information mode

CUDA Info:
==========

CUDA.Version.: 12.0

Backend Device ID #1 (Alias: #4)
  Name...........: NVIDIA GeForce RTX 2080 Ti
  Processor(s)...: 68
  Clock..........: 1545
  Memory.Total...: 11263 MB
  Memory.Free....: 9232 MB
  PCI.Addr.BDFe..: 0000:02:00.0

Backend Device ID #2 (Alias: #5)
  Name...........: NVIDIA GeForce RTX 2080 Ti
  Processor(s)...: 68
  Clock..........: 1635
  Memory.Total...: 11263 MB
  Memory.Free....: 9232 MB
  PCI.Addr.BDFe..: 0000:03:00.0

Backend Device ID #3 (Alias: #6)
  Name...........: NVIDIA GeForce RTX 2080 Ti
  Processor(s)...: 68
  Clock..........: 1545
  Memory.Total...: 11263 MB
  Memory.Free....: 9232 MB
  PCI.Addr.BDFe..: 0000:04:00.0

OpenCL Info:
============

OpenCL Platform ID #1
  Vendor..: NVIDIA Corporation
  Name....: NVIDIA CUDA
  Version.: OpenCL 3.0 CUDA 12.0.147

  Backend Device ID #4 (Alias: #1)
    Type...........: GPU
    Vendor.ID......: 32
    Vendor.........: NVIDIA Corporation
    Name...........: NVIDIA GeForce RTX 2080 Ti
    Version........: OpenCL 3.0 CUDA
    Processor(s)...: 68
    Clock..........: 1545
    Memory.Total...: 11263 MB (limited to 2815 MB allocatable in one block)
    Memory.Free....: 9856 MB
    OpenCL.Version.: OpenCL C 1.2
    Driver.Version.: 528.49
    PCI.Addr.BDF...: 02:00.0

  Backend Device ID #5 (Alias: #2)
    Type...........: GPU
    Vendor.ID......: 32
    Vendor.........: NVIDIA Corporation
    Name...........: NVIDIA GeForce RTX 2080 Ti
    Version........: OpenCL 3.0 CUDA
    Processor(s)...: 68
    Clock..........: 1635
    Memory.Total...: 11263 MB (limited to 2815 MB allocatable in one block)
    Memory.Free....: 9856 MB
    OpenCL.Version.: OpenCL C 1.2
    Driver.Version.: 528.49
    PCI.Addr.BDF...: 03:00.0

  Backend Device ID #6 (Alias: #3)
    Type...........: GPU
    Vendor.ID......: 32
    Vendor.........: NVIDIA Corporation
    Name...........: NVIDIA GeForce RTX 2080 Ti
    Version........: OpenCL 3.0 CUDA
    Processor(s)...: 68
    Clock..........: 1545
    Memory.Total...: 11263 MB (limited to 2815 MB allocatable in one block)
    Memory.Free....: 9856 MB
    OpenCL.Version.: OpenCL C 1.2
    Driver.Version.: 528.49
    PCI.Addr.BDF...: 04:00.0

OpenCL Platform ID #2
  Vendor..: Intel(R) Corporation
  Name....: Intel(R) OpenCL
  Version.: OpenCL 1.2

  Backend Device ID #7
    Type...........: GPU
    Vendor.ID......: 8
    Vendor.........: Intel(R) Corporation
    Name...........: Intel(R) HD Graphics
    Version........: OpenCL 1.2
    Processor(s)...: 10
    Clock..........: 1050
    Memory.Total...: 1629 MB (limited to 203 MB allocatable in one block)
    Memory.Free....: 768 MB
    OpenCL.Version.: OpenCL C 1.2
    Driver.Version.: 20.19.15.4531

  Backend Device ID #8
    Type...........: CPU
    Vendor.ID......: 8
    Vendor.........: Intel(R) Corporation
    Name...........: Intel(R) Celeron(R) CPU G1840 @ 2.80GHz
    Version........: OpenCL 1.2 (Build 10094)
    Processor(s)...: 2
    Clock..........: 2800
    Memory.Total...: 8102 MB (limited to 1012 MB allocatable in one block)
    Memory.Free....: 4019 MB
    OpenCL.Version.: OpenCL C 1.2
    Driver.Version.: 5.2.0.10094

[Kartikpal1608]

C:\Users\admin\OneDrive - Chandigarh University\Desktop\hashcat-6.2.6>hashcat.exe -m 0 -a 0 F:\test.txt
hashcat (v6.2.6) starting

when i am trying to execute this it just stuck at starting line and agin the above line appears.

[b8vr]

C:\Users\admin\OneDrive - Chandigarh University\Desktop\hashcat-6.2.6>hashcat.exe -m 0 -a 0 F:\test.txt
hashcat (v6.2.6) starting

when i am trying to execute this it just stuck at starting line and agin the above line appears.

According to 
https://docs.nvidia.com/gameworks/conten...tatus.html

NVAPI_NVIDIA_DEVICE_NOT_FOUND
No NVIDIA display driver, or NVIDIA GPU driving a display, was found.

Have you tried removing the drivers and reinstalling them?