[Win7SP1 x64] DPC latency issue (crackling audio) dxgkrnl.sys

[explorers]

I have notebook Dell vostro 3700 with Windows 7 x64 SP1.
While using sound card which is located in motherboard there were no clicks. But when the connecting cables to the sound card broke, I bought an external sound card (E-MU Tracker Pre) with a connection to a computer by usb. And started the nightmare with clicks in any applications.

Download applications DPC Latency Checker and latency monitor and found USBPORT.SYS and dxgkrnl.sys 14778,15788 us
Also disabled system drives I do not use (Lan, ricoh memory stick host controller).

 

[xilolee]

Hi TemplarBlood. :welcome:

Would you try these steps?

Preamble

In case you don't know how to open an elevated command prompt in windows 7, you can use one of these three methods:

• click start, all programs, accessories, right-click the command prompt in the list and click run as administrator, click yes on the user account control window that should appear
• click start, type cmd in the searchbox, right-click the cmd in the list of results and click run as administrator, click yes on the user account control window that should appear
• click start, type cmd in the searchbox, press and keep pressed ctrl + shift Keys on your keyboard, then press enter, click yes on the user account control window that should appear

• Left-click on Start, type directly msconfig, press enter.
  Is the radio button on normal startup?
• Advanced disk cleanup with cleanmgr:
  • Open an elevated command prompt
  • Type cleanmgr /sageset:1 and press enter.
  • Select all the options, or leave unticked the ones you prefer.
  • Type cleanmgr /sagerun:1 and press enter
  • Let it work until it finishes.
• Launch this command from an elevated command prompt:

  sfc /scannow

  If you get the following message:

  Windows Resource Protection found corrupt files but was unable to fix some of them. Details are included in the CBS.Log %WinDir%\Logs\CBS\CBS.log

  Read Windows Update Forum Posting Instructions (click) and provide the necessary (and missing) informations to the experts. I.e., you should:
  • export and zip/compress the entire CBS folder on your desktop
  • open a new topic in the windows update sub-forum (in sysnative.com)
  • attach that zipped file to that new topic
  If the CBS compressed folder will be too large, you can check the second post on that thread (to use the sfcfix tool with a script) or you can use a (possibly fast) web service like MS OneDrive, Google Drive, DropBox, Box, Mega, Apple iCloud, Amazon Cloud Drive, and so forth...
  Instead if you get the following messages, go to the next step:

  Windows Resource Protection did not find any integrity violations
  Windows Resource Protection found corrupt files and successfully repaired them. Details are included in the CBS.Log %WinDir%\Logs\CBS\CBS.log

• Defragment your system drive (using windows default defragmenter). Steps:
  • Open an elevated command prompt
  • Type defrag c: /h and press enter
  • Wait until it finishes
• Check your system partition, then post the result here. Steps:
  • Open an elevated command prompt.
  • Type chkdsk c: /b and press enter.
  • You'll get:

    The type of the file system is NTFS.
    Cannot lock current drive.
    Chkdsk cannot run because the volume is in use by another
    process. Would you like to schedule this volume to be
    checked the next time the system restarts? (Y/N)

  • Type Y and press enter.
  • Then restart/reboot and wait until it finishes this check.
  • To find chkdsk result:
    • Open an elevated command prompt
    • Copy/paste this command and press enter:

      wevtutil qe application /c:1 /rd:true  /f:text /q:"*[System[Provider[(@Name='Microsoft-Windows-Wininit')]]]" > "%userprofile%\desktop\ChkDskLOG.txt" & notepad "%userprofile%\desktop\ChkDskLOG.txt"

    • It should create chkdsklog.txt on your desktop and open it: paste its content here.
    • If the command won't work, type eventvwr, press enter, in the event viewer window double-left-click Windows Logs to expand it, left-click Application, double-left-click the information event with source wininit, copy its content and post it here.

---

If the problem persists:

• Please provide answers for (answer the best that you can):
  • System Manufacturer?
  • Laptop or Desktop?
  • Exact model number (if laptop, check label on bottom)
  • OS ? (Windows 10, 8.1, 8, 7, Vista)
  • x86 (32bit) or x64 (64bit)?
  • Service pack?
  • What was original installed OS on system?
  • Is the OS an OEM version (came pre-installed on system) or full retail version (YOU purchased it from retailer)?
  • Age of system? (hardware)
  • Age of OS installation?
  • Have you re-installed the OS?
  • CPU
  • RAM (brand, model, which slots are you using?)
  • Video Card
  • MotherBoard - (if NOT a laptop)
  • Power Supply - brand & wattage (if laptop, skip this one)
  • What security software are you using? (Firewall, antivirus, antimalware, antispyware, and so forth)
  • Are you using proxy, vpn, ipfilters or similar software?
  • Are you using Disk Image tools? (like daemon tools, alcohol 52% or 120%, virtual CloneDrive, roxio software)
  • Are you currently under/overclocking? Are there overclocking software installed on your system?

• Retrieve System Information, using speccy
  1. Download Speccy portable - actual version 1.30.730 (click), unzip/decompress it and put it on your desktop.
  2. When the program opens, it will retrieve some information regarding your system.
  3. Once it's done, select the File menu and choose Publish snapshot. Answer Yes to the confirmation message.
     (Or generate a log in your pc, if you prefer to not publish the snapshot for some reason)
  4. On the next screen that comes up, choose the Copy to Clipboard button and paste this link in your next reply.
     (Or upload here the generated log, in case you didn't publish the snapshot)

• Provide the SysnativeFileCollectionApp.zip
  1. Check the first four steps in Blue Screen of Death (BSOD) Posting Instructions (click).
     You can skip the perfmon report, if it shows problems (it is problematic for many users, starting from windows 8 to 10).

• Facultative System information log (if previous point fails for some obscure reason)
  The following command should be run from an elevated command prompt.
  It should generate a log, named MsInfo.nfo, on your desktop, after some time (few seconds or minutes).
  Read More:

  How to open an elevated command prompt in ALL windows versions: click (or right-click) on Windows Start, click in the searchbox (or click Search, or start to type directly), type CMD, press and hold CTRL and SHIFT keys (on your keyboard), press enter (on your keyboard), release all the keys, click yes to UAC window (if you disabled UAC, this shouldn't appear)

  msinfo32 /nfo msinfo32 /nfo "%userprofile%\desktop\MsInfo.nfo"

  (Then upload it here)

• Download and install the Windows Performance Toolkit - Windows Assessment and Deployment Kit (Windows ADK) for Windows 8.1 Update - adksetup.exe 1.36MB (click):
  Read More:

  Click Download (adksetup.exe), save/run it and you'll see for first Specify location: leave it default or choose your preferred location, then click Next.

  Read More:

  

  Then you'll see Windows kits privacy: Niemiro said "you may opt in to CEIP if you so wish - it is not necessary, but you may wish to do so". Then click Next.

  Read More:

  

  Then you'll see License agreement: click Accept.

  Read More:

  

  Then you'll see Select the features you want to install: select only Windows Performance Toolkit and click Install.

  Read More:

  
  Then open an elevated command prompt (right-click on the windows start button on bottom-left corner, left-click Command Prompt (Admin)) and launch these commands:
  Read More:

  
  

  1. Set the path environment variable adding the windows performance toolkit path:

     SET PATH=%PATH%;C:\Program Files (x86)\Windows Kits\10\Windows Performance Toolkit\

     If you have chosen another path in specify location, you should provide THAT ONE.
  2. You can generate a new trace with this command:

     xperf -on DiagEasy

     Wait some time (Niemiro said: "Wait until the computer has gone through a period of stuttering slowness") and then:

     xperf -d "%userprofile%\Desktop\trace.etl"

  3. Upload/post the files. You can attach them here through GoogleDrive, OneDrive, DropBox or similar services.
  
  You can also read the original tutorial/guide and its following posts for more informations:
  
  How to Diagnose and Fix High DPC Latency Issues with WPA (Windows Vista/7/8) (click) (by Niemiro)