NWinfo

Hardware information utility for Windows

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Project maintained by a1ive Hosted on GitHub Pages — Theme by mattgraham

NWinfo

NWinfo is a Win32 program that allows you to obtain system and hardware information.

Features

• Retrieves detailed information about SMBIOS, CPUID, S.M.A.R.T., PCI, EDID, and more.
• Supports exporting in JSON, YAML, and HTML formats.
• Gathers information directly without relying on WMI.

Download

The source code is maintained in a git repository at https://github.com/a1ive/nwinfo.
You can download the latest version of the binary from GitHub Releases.

CLI (nwinfo)

Usage

.\nwinfo.exe OPTIONS

Example Commands

.\nwinfo.exe --format=json --output=report.json --cp=UTF8 --sys --disk

Exports system and disk information to report.json in JSON format.

.\nwinfo.exe --pci=03

Prints information about all PCI devices in the class code 03 (Display Controllers).

.\nwinfo.exe --format=html --output=report.html --net=active,phys,ipv4

Exports active physical network interfaces with IPv4 addresses to report.html in HTML format.

General Options

• –format=FORMAT
  Specify output format.
  FORMAT can be YAML (default), JSON, LUA, TREE, or HTML.
• –output=FILE
  Write to FILE instead of printing to screen.
• –cp=CODEPAGE
  Set the code page of output text.
  CODEPAGE can be ANSI or UTF8.
• –human
  Display numbers in human readable format.
• –bin=FORMAT
  Specify binary format.
  FORMAT can be NONE (default), BASE64 or HEX.
• –debug
  Print debug info to stdout.
• –hide-sensitive
  Hide sensitive data (MAC & S/N).

Hardware Details

• –cpu[=FILE]
  Print CPUID info.
  Driver is required to access sensors (e.g. temperature).
  Intel, AMD and VIA/Zhaoxin CPUs are supported.
  FILE specifies the file name of the CPUID dump.
• –net[=FLAG,...]
  Print network info.
  • GUID
    Specify the GUID of the network interface, e.g. {B16B00B5-CAFE-BEEF-DEAD-001453AD0529}
  • FLAGS
ACTIVE Exclude inactive network interfaces.
    PHYS Exclude virtual network interfaces.
    ETH Include Ethernet network interfaces.
    WLAN Include IEEE 802.11 wireless addresses.
    IPV4 Show IPv4 addresses only.
    IPV6 Show IPv6 addresses only.
• –acpi[=SGN]
  Print ACPI info.
  Driver is required to access some ACPI tables.
  SGN specifies the signature of the ACPI table, e.g. FACP (Fixed ACPI Description Table).
• –smbios[=TYPE]
  Print SMBIOS info.
  TYPE specifies the type of the SMBIOS table, e.g. 2 (Base Board Information).
• –disk[=FLAG,..]
  Print disk info.
  • PATH
    Specify the path of the disk, e.g. \\.\PhysicalDrive0, \\.\CdRom0.
  • FLAGS
NO-SMART Don’t print disk S.M.A.R.T. info.
    PHYS Exclude virtual drives.
    CD Include CD-ROM devices.
    HD Include hard drives.
    NVME Include NVMe devices.
    SATA Include SATA devices.
    SCSI Include SCSI devices.
    SAS Include SAS devices.
    USB Include USB devices.
• –smart=FLAG,...
  Specify S.M.A.R.T. features.
  Features enabled by default: WMI, ATA, NVIDIA, MARVELL, SAT, SUNPLUS, IODATA, LOGITEC, PROLIFIC, USBJMICRON, CYPRESS, MEMORY, JMICRON, ASMEDIA, REALTEK, MEGARAID, VROC, ASM1352R and HIDERAID.
  Use DEFAULT to specify the above features.
  Other features are ADVANCED, HD204UI, ADATA, NOWAKEUP and RTK9220DP.
• –display
  Print EDID info.
• –pci[=CLASS]
  Print PCI info.
  CLASS specifies the class code of PCI devices, e.g. 0C05 (SMBus).
• –spd[=FILE]
  Print DIMM SPD info.
  Driver is required to access SPD data.
  :warning: This option may damage the hardware. FILE specifies the file name of the SPD dump.
• –usb
  Print USB info.
• –battery
  Print battery info.
• –uefi[=FLAG,..]
  Print UEFI info.
  • FLAGS
MENU Print UEFI boot menus.
    VARS List all UEFI variables.
• –audio
  Print audio devices.
• –gpu
  Print GPU utilization and sensors (e.g. temperature).
  GPU drivers are required to access this information.
  NVIDIA (NVAPI), AMD (ADL2) and Intel (IGCL) are supported.
• –device[=TYPE]
  Print device tree.
  TYPE specifies the type of the devices, e.g. ACPI, SWD, PCI, or USB.

System Information

• –sys
  Print system info.
• –shares
  Print network mapped drives and shared folders.
• –public-ip
  Print public IP address.
• –product-policy[=NAME]
  Print ProductPolicy.
  NAME specifies the name of the product policy.
• –font
  Print installed fonts.

PowerShell Script for System Diagnostics

hw_report.ps1 is a PowerShell script designed to generate and display a detailed hardware and system report using nwinfo.

You might need to temporarily allow script execution by running the following command:

Set-ExecutionPolicy -Scope Process -ExecutionPolicy Bypass

Supported Hardware

CPU

Vendor	CPUID	Temperature	Voltage	Power	Clock
Intel	✅	✅	✅	✅	✅
AMD	✅	✅	✅	✅	✅
VIA / Zhaoxin	✅	✅	❌	❌	❌

GPU

Vendor	API	GPU Usage	VRAM	Temperature	Power	Frequency	Voltage	Fan Speed
NVIDIA	NVAPI	✅	✅	✅	✅	✅	✅	✅
AMD	ADL2	✅	✅	✅	✅	✅	✅	✅
Intel	IGCL	✅	✅	✅	✅	✅	✅	✅
Generic	D3D	✅	✅	✅	✅	❌	❌	⚠️
Generic	GPU-Z	✅	⚠️	✅	✅	✅	✅	✅

Notes:

• VRAM refers to the dedicated video memory only.
• Frequency refers to the GPU core frequency.
• Power refers to the board power draw.

Memory Module SPD

• SMBus: Intel PCH, PIIX4 / AMD SB / Hygon
• Memory Module: SDR, DDR, DDR2, DDR3, DDR4, DDR5
• Thermal Sensor: DDR4, DDR5

HDD / SSD S.M.A.R.T.

NWinfo uses libcdi to access S.M.A.R.T. data.

libcdi is a dynamic library based on CrystalDiskInfo.

Note: NVMe requires Windows 10 or later.

Supported Drivers

The program searches for and loads drivers in the following order: CPUZ161 -> EVGA -> HwRwDrv -> WinRing0 -> PawnIO.

Driver	Filename	Security Status	Bundled	CPU Sensor	SPD	ACPI
PawnIO	PawnIO.sys	✅ Safe to use	✅	⚠️	✅	❌
HwRwDrv	HwRwDrvx64.sys	❌ Vulnerable	❌	✅	✅	✅
WinRing0	WinRing0x64.sys	❌ Blocked by AV	❌	✅	✅	⚠️
CPUZ161	cpuidx64.sys	✅ Safe to use	❌	✅	✅	✅
EVGA	HwIox64.sys	✅ Safe to use	❌	✅	✅	❌

Note: The program can still run normally even without drivers, but some hardware information may not be accessible.

PawnIO Driver Installation

Install the PawnIO driver silently using the following command:

.\PawnIOSetup.exe -install -silent

Uninstall the PawnIO driver silently using the following command:

.\PawnIOSetup.exe -uninstall -silent

File List

This section describes all files included in the final release package.

File Name	Category	Description
nwinfo.exe	Executable	Main executable (x64)
nwinfox86.exe	Executable	Main executable (x86)
gnwinfo.exe	Executable	GUI executable (x64)
gnwinfox86.exe	Executable	GUI executable (x86)
libcdi.dll	Library	S.M.A.R.T. data access library (x64)
libcdix86.dll	Library	S.M.A.R.T. data access library (x86)
hw_report.ps1	Script	Example PowerShell script
gnwinfo.ini	Configuration	Configuration file for the GUI
pci.ids	Database	PCI database
usb.ids	Database	USB database
pnp.ids	Database	PnP (monitor) vendor database
jep106.ids	Database	JEDEC memory module vendor database
PawnIOSetup.exe	Driver	PawnIO driver installer (x64)
IntelMSR.bin	PawnIO Module	Intel MSR module for PawnIO driver
AMDFamily0F.bin	PawnIO Module	AMD K8 MSR module for PawnIO driver
AMDFamily10.bin	PawnIO Module	AMD K10 MSR module for PawnIO driver
AMDFamily17.bin	PawnIO Module	AMD Zen MSR module for PawnIO driver
RyzenSMU.bin	PawnIO Module	AMD Ryzen SMU module for PawnIO driver
SmbusPIIX4.bin	PawnIO Module	PIIX4 SMBus module for PawnIO driver
SmbusI801.bin	PawnIO Module	I801 SMBus module for PawnIO driver

Licenses & Credits

This project is licensed under the Unlicense license.

• libcpuid
• CrystalDiskInfo
• Nuklear
• stb
• optparse
• hwdata
• PawnIO