[W7SP1 x64] High DPC Latency, mainly SCSIPORT.sys, USBPORT.sys and nvlddmkm.sys.

[denzity]

Hi

I'm running Windows 7 and have sound crackling/popping due to high DPC latency.

When I run sfc /scannow I get:

Microsoft Windows [Version 6.1.7601]Copyright (c) 2009 Microsoft Corporation.  All rights reserved.


C:\Users\denzity>sfc /scannow


Beginning system scan.  This process will take some time.


Beginning verification phase of system scan.
Verification 100% complete.
Windows Resource Protection found corrupt files but was unable to fix some of t
em.
Details are included in the CBS.Log windir\Logs\CBS\CBS.log. For example
C:\Windows\Logs\CBS\CBS.log

I ran the SFCFix.exe and here is my log.

SFCFix version 3.0.0.0 by niemiro.Start time: 2017-07-15 02:27:08.051
Microsoft Windows 7 Service Pack 1 - amd64
Not using a script file.








AutoAnalysis::
SUMMARY: No corruptions were detected.
AutoAnalysis:: directive completed successfully.








Successfully processed all directives.






Failed to generate a complete zip file. Upload aborted.




SFCFix version 3.0.0.0 by niemiro has completed.
Currently storing 0 datablocks.
Finish time: 2017-07-15 02:28:58.879
----------------------EOF-----------------------

Here is my .etl file http://naz.io/trace.zip

So far I've tried:

• Disabling USB 3 in BIOS
• Disabled all network adapters in device manager.
• Disabling my PCI raid controller
• Disabling CPU throttling in BIOS
• Updated BIOS to the most recent version
• Applied all core Windows updates

Any help at all would be very much appreciated as I've been pulling my hair out over this for nearly a month now. Thanks.

 

[jcgriff2]

Re: High DPC Latency. Various drivers mainly SCSIPORT.sys, USBPORT.sys and nvlddmkm.s

Update your video drivers.

Make sure that your BIOS is up to date.

If you have an Internet Security Suite (3rd party firewall) installed, remove it - Uninstallers (removal tools) for common Windows antivirus software—ESET Knowledgebase

For help with SFC - https://www.sysnative.com/forums/windows-update/4736-windows-update-forum-posting-instructions.html

 

[frontncenter]

Re: High DPC Latency. Various drivers mainly SCSIPORT.sys, USBPORT.sys and nvlddmkm.s

Any help at all would be very much appreciated as I've been pulling my hair out over this for nearly a month now. Thanks.[/QUOTE]


The problem isn't updating, the problem IS an update. As usual, the problem is caused by a bad MS update. They've been intentionally trying to cripple Win 7 & 8 users to force them into Win 1o. They need to please their investors who were promised lots of users for their telemetry ad and spy oriented OS.

KB2868038 is the culprit, or at least was. Who knows what else they're putting out there. Uninstall it and see if that helps. If it not, download process hacker and disable usbport.sys and atapi drivers. If you already use 10 then all I can say is get ready for more of the same. Personally, I would get rid of 10, but that's just me.