High DPC on a fresh installation of W8.1

[CanzonE]

Hi guys, not sure if this is the correct place to post this, but I'm out of options...

I'm having major issues with the DPC on my computer.

 

Before and after I installed any programs on w8.1 i have been having audio drops and cutouts, I have tried:
* Installing the newest sound drivers
* Resetting the BIOS configurations
* Installing the newest Motherboard drivers from Intel
* Installing newest drivers from Nvidia
* Cleaning my computer from dust as well as cleaning the RAM and graphics card contacts
* Discharging my speakers of current

The problem still persists after all that. I checked using xperf and found that the "culprit" is ntoskrnl.exe (at least I think that is what it says...)


I'm running on a pretty old customized computer:
Motherboard: GigaByte G41M-Combo Ver 2.0
CPU: Intel Core 2 Quad Q6600 2.4GHz
Display card: Nvidia Geforce 630 GT 1GB
RAM: 8GB
My sound card is in my Motherboard.


I'm adding the .etl file here: https://www.dropbox.com/s/pejj430ks5ymx0f/CPU.etl

Thanks in advanced

[Soukyuu]

Have you read this on the DPC latency site?

Windows 8 Compatibility: The DPC latency utility runs on Windows 8 but does not show correct values. The output suggests that the Windows 8 kernel performs badly and introduces a constant latency of one millisecond, which is not the case in practice. DPCs in the Windows 8 kernel behave identical to Windows 7. The utility produces incorrect results because the implementation of kernel timers has changed in Windows 8, which causes a side effect with the measuring algorithm used by the utility. Thesycon is working on a new version of the DPC latency utility and will make it available on this site as soon as it is finished.

[DosProbie]

Try this Script then reboot.

:: http://www.tomshardware.com/faq/id-1655607/optimize-dpc-latency-windows.html:: http://msdn.microsoft.com/en-us/library/windows/hardware/ff542202(v=vs.85).aspx@Echo Off&color 1e&mode con:cols=60 lines=6setlocalcls:: NOTE: You Must Run This Script "As Administrator" to prevent access denied errors!:: Admin Checkerreg query "hku\S-1-5-19" >nul 2>&1 && (goto admin) || (::nonadmincls@color f9mode con: cols=80 lines=4title, RIGHT-CLICK AND RUNAS ADMINISTRATOR!echo Running as Non-Administrator!..Right-click this file and run as Administrator!echo.echo == Press any [KEY] to Start Over ==&pause>nulGOTO end):admincls:: Deferred Procedure Call Fix..BCDEDIT /SET DISABLEDYNAMICTICK YesEcho:Timeout /t 4 /nobreak>nul:endexit:: rev. 06.07.14 ~DosProbie

~DP 

Edited June 7, 2014 by DosProbie

[CanzonE]

 

Have you read this on the DPC latency site?

 

 

Windows 8 Compatibility: The DPC latency utility runs on Windows 8 but does not show correct values. The output suggests that the Windows 8 kernel performs badly and introduces a constant latency of one millisecond, which is not the case in practice. DPCs in the Windows 8 kernel behave identical to Windows 7. The utility produces incorrect results because the implementation of kernel timers has changed in Windows 8, which causes a side effect with the measuring algorithm used by the utility. Thesycon is working on a new version of the DPC latency utility and will make it available on this site as soon as it is finished.

 

 

I know there are some incomatabilities, but the fact is the sound on my computer is lagging and crackling.

 

Try this Script then reboot.

:: http://www.tomshardware.com/faq/id-1655607/optimize-dpc-latency-windows.html:: http://msdn.microsoft.com/en-us/library/windows/hardware/ff542202(v=vs.85).aspx@Echo Off&color 1e&mode con:cols=60 lines=6setlocalcls:: NOTE: You Must Run This Script "As Administrator" to prevent access denied errors!:: Admin Checkerreg query "hku\S-1-5-19" >nul 2>&1 && (goto admin) || (::nonadmincls@color f9mode con: cols=80 lines=4title, RIGHT-CLICK AND RUNAS ADMINISTRATOR!echo Running as Non-Administrator!..Right-click this file and run as Administrator!echo.echo == Press any [KEY] to Start Over ==&pause>nulGOTO end):admincls:: Deferred Procedure Call Fix..BCDEDIT /SET DISABLEDYNAMICTICK YesEcho:Timeout /t 4 /nobreak>nul:endexit:: rev. 06.07.14 ~DosProbie

~DP 

Trying this right now

[DosProbie]

After running my above script this is what I get with 8.1 x64.

 

~DP 

 

[CanzonE]

After running my above script this is what I get with 8.1 x64.

 

~DP 

 

 

Unfortunatley, the problem is still there:

 

It did indeed look like what you posted up until I opened up my music folder

Edited June 7, 2014 by CanzonE

[DosProbie]

The downloader Installer for DPC is malware so be careful!

Installs hijacker BHO crap, rqpbhevlkc64.exe in Program Files\004 in services, coupon downloader, Greener Web etc.

I extracted just the .exe from my temp folder which runs clean if anyone wants it..

 

~DP 

 

[CanzonE]

 

The downloader Installer for DPC is malware so be careful!

Installs hijacker BHO crap, rqpbhevlkc64.exe in Program Files\004 in services, coupon downloader, Greener Web etc.

I extracted just the .exe from my temp folder which runs clean if anyone wants it..

 

~DP 

 

 

Umm, I don't get what this has to do with my problem, can you please elaborate?

[DosProbie]

It doesn't address your problem, just warning anyone else if they want to download and use the DPC  software to be careful.

 

~DP

[MagicAndre1981]

Update NOD32 to the latest version and also try to set the power plan to high performance. Does this improve it?

[NoelC]

The DPC Latency Checker is incompatible with Windows 8, as mentioned.  You simply can't trust what you're seeing from it.  I wouldn't advise using it.  Way back when, they had said they'd try to make it compatible, but I guess that never came to anything.  And as DP mentioned above, you can even end up contracting malware through the download process.  I guess it's a tool whose time came and went.

 

Andre is a real expert on timing issues.  I imagine that if updating/removing NOD32 doesn't fix the issue, he'll ask you to run some performance traces.  Listen to what he says.

 

-Noel

[CanzonE]

Update NOD32 to the latest version and also try to set the power plan to high performance. Does this improve it?

 

You, sir, are a genius O_O

 

Thank you sooo much!

[MagicAndre1981]

You're welcome.