Dxdiag Command Line options

The DirectX Diagnostic Tool is one of the most useful utilities in Windows that was designed to fix DirectX-related (video) or sound related hardware problems.

The great thing about the tool, It provides a quick and easy access to most of the important information such as video and audio drivers that you need before you upgrade or reinstall your OS.

Creating a backup of those information is very useful especially on old laptops.

Using the Command Line Switches

Usage: dxdiag [/x outfile] [/t outfile] [/whql:off] [/whql:on]

/x outfile – save XML information to the outfile and quit

/t outfile – save txt information to the outfile and quit

/whql:[on/off] – allow or do not allow dxdiag to check for WQHL digital signature

example

dxdiag /t dxdiag_backup.txt

Sample Output

------------------ System Information ------------------ Time of this report: 2/18/2010, 20:23:42        Machine name: TOX-PC    Operating System: Windows Vista™ Ultimate (6.0, Build 6002) Service Pack 2 (6002.vistasp2_gdr.091208-0542)            Language: English (Regional Setting: English) System Manufacturer: Dell Inc.        System Model: Latitude D630                                  BIOS: Phoenix ROM BIOS PLUS Version 1.10 A02           Processor: Intel(R) Core(TM)2 Duo CPU     T7100  @ 1.80GHz (2 CPUs), ~1.8GHz              Memory: 3062MB RAM           Page File: 1809MB used, 4533MB available         Windows Dir: C:\Windows     DirectX Version: DirectX 11 DX Setup Parameters: Not found      DxDiag Version: 7.00.6002.18107 32bit Unicode ------------ DxDiag Notes ------------       Display Tab 1: No problems found.         Sound Tab 1: No problems found.           Input Tab: No problems found. -------------------- DirectX Debug Levels -------------------- Direct3D:    0/4 (retail) DirectDraw:  0/4 (retail) DirectInput: 0/5 (retail) DirectMusic: 0/5 (retail) DirectPlay:  0/9 (retail) DirectSound: 0/5 (retail) DirectShow:  0/6 (retail) --------------- Display Devices ---------------         Card name: Mobile Intel(R) 965 Express Chipset Family      Manufacturer: Intel Corporation         Chip type: Mobile Intel(R) 965 Express Chipset Family          DAC type: Internal        Device Key: Enum\PCI\VEN_8086&DEV_2A02&SUBSYS_01F91028&REV_0C    Display Memory: 358 MB Dedicated Memory: 0 MB     Shared Memory: 358 MB      Current Mode: 1280 x 800 (32 bit) (60Hz)           Monitor: Generic PnP Monitor       Driver Name: igdumd32.dll    Driver Version: 7.14.0010.1253 (English)       DDI Version: 9Ex    BGRA Supported: Yes Driver Attributes: Final Retail Driver Date/Size: 4/14/2007 08:28:18, 2363392 bytes       WHQL Logo'd: Yes   WHQL Date Stamp: Device Identifier: {D7B78E66-6942-11CF-7D77-F321ADC2CA35}         Vendor ID: 0x8086         Device ID: 0x2A02

Hope this helps!