callingashley Posted March 2, 2013 Share Posted March 2, 2013 (edited) Hi MagicAndre,Got a new laptop 4 months back, Lenovo Z580, till a week, back everything was fine, but now its about 80-100% full CPU utilization.No process utilizing more than 10% (aggregate maybe 30%)(all users checked). Cannot understand the reason.In safe mode its perfectly fine.(CPU 2%)I downloaded the win perf kit and tried the steps in your blogs, but was unable to find the options (graph "CPU sampling per CPU" ), maybe its different in the new perf kit version.i uploaded latency.zip. Any help would be greatly appreciated.http://www.mediafire.com/?9ysx9b84xdbydddThanks & RegardsAshley Edited March 2, 2013 by callingashley Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted March 3, 2013 Author Share Posted March 3, 2013 the explorer uses some CPU usage to display overlay icons. PromptService64.exe and PromptService.exe (5280) scan the registry for data.that are the top3 programs which causes a high CPU usage. Next you run 3 AV tools (Windows Security Essentials , McAfee and COMODO). Only use 1 and remove the 2 others!Use AutoRuns to stop all tools that you don't really need all the time. Link to comment Share on other sites More sharing options...
callingashley Posted March 10, 2013 Share Posted March 10, 2013 Thanks MagicAndre......MCAfee was expired and after removing it, system seems fine, using commodo as a firewall and security essentials as an anti virus. Although one strange problem does persist, on opening any new application or even a folder, the CPU usage shoots to 100% for a second to two!!!!! Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted March 10, 2013 Author Share Posted March 10, 2013 make a new trace which captures this CPU usage. Link to comment Share on other sites More sharing options...
callingashley Posted March 27, 2013 Share Posted March 27, 2013 Hey MagicAndre, Thnx for the reply.....just back from a nice vacation.Please find the link of the trace, this trace is taken whenever i access folders on the system. The CPU usage shoots to 100% on folder access else it remains at 30-40% which i guess is standard.http://www.mediafire.com/?b5v1c991b5zj64jThanks & RegardsAshley Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted March 27, 2013 Author Share Posted March 27, 2013 you have DPC issues:Total = 3164 for module iaStor.sysElapsed Time, > 512 usecs AND <= 1024 usecs, 1005, or 31.76%Elapsed Time, > 1024 usecs AND <= 2048 usecs, 25, or 0.79%Total, 3164Total = 23 for module netbt.sysElapsed Time, > 2048 usecs AND <= 4096 usecs, 4, or 17.39%Elapsed Time, > 4096 usecs AND <= 8192 usecs, 17, or 73.91%Elapsed Time, > 8192 usecs AND <= 16384 usecs, 1, or 4.35%Total, 23Total = 423 for module tcpip.sysElapsed Time, > 512 usecs AND <= 1024 usecs, 220, or 52.01%Elapsed Time, > 1024 usecs AND <= 2048 usecs, 34, or 8.04%Total, 423udate the Intel AHCI, Realtek and Broadcom network drivers.I can also see this call:ntkrnlmp.exe!VerifierExAllocatePoolExthis means you have driver verifier enabled. Didi you get several BSODs? Did you enable the verifier for better dumps? Please disable driver verifier and reboot. Your PC should be faster without DriverVerifer. Link to comment Share on other sites More sharing options...
callingashley Posted March 28, 2013 Share Posted March 28, 2013 Thnx MagicAndre...I checked all three Intel AHCI, Realtek and Broadcom ....all reverted with the latest driver is already installed (this is a 5 month old lenovoZ580 with win7 laptop).I do get BSODs sometimes, mainly caused by NVIDIA...but that too has the latest driver installed.I have disabled driver verifier.Thanks & RegardsAshley Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted March 28, 2013 Author Share Posted March 28, 2013 is it now better with driver verifier disabled? Link to comment Share on other sites More sharing options...
callingashley Posted April 1, 2013 Share Posted April 1, 2013 Hey MagicAndre, Thnx a ton!!!!!!...disabling Driver Verifier did it!!!!!! this was enabled by default on my system....win7 came with the laptop.Now the CPU is 12% on folder access, while typical CPU is 2-3%. Do let me know which report you saw on the WPA, i had tried, but could not figure which process was utilizing the CPU. Thnx once again....u da man.Thanks & RegardsAshley Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted April 1, 2013 Author Share Posted April 1, 2013 I saw this in the callstack of the CPU sampling summary table. Link to comment Share on other sites More sharing options...
firedragon Posted August 5, 2013 Share Posted August 5, 2013 HI, I'm new to this forum as I have an issue with the NT Kernel eating over 50% of my CPU and its constantly maxed at 100%. I have read the tips here and have included the following print screens, I am hoping that someone can help me as this is a nightmare for me. I'm a total Noob at this sort of stuff and have tried to follow the instructions but am not getting something right.First i downloaded the Windows performance tools and there is a screen shot of this, then I downloaded xperf but when I try to run the commands in CMD i get the response in the cmd screen shot. Also I have changed the value in regedit as described to 1.please help and explain in laymans terms to me as i can not do the trace to get the help needed to sort it.also in cmd i can not change it to c:\temp as it says its not a correct internal or external commandalso when looking further into this thread another user was told to do this :- ( have you installed the wpt_x64.msi from the folder C:\Program Files\Microsoft SDKs\Windows\v7.0\bin? ) only i cannot find this in program fileshope you can understand this and help!Thanks in advance Tony Link to comment Share on other sites More sharing options...
firedragon Posted August 5, 2013 Share Posted August 5, 2013 oh yeah sorry here is my system profileThanksTony Link to comment Share on other sites More sharing options...
MagicAndre1981 Posted August 5, 2013 Author Share Posted August 5, 2013 you must open the cmd.exe as admin:http://windows.microsoft.com/en-US/windows7/How-do-I-run-an-application-once-with-a-full-administrator-access-token Link to comment Share on other sites More sharing options...
firedragon Posted August 5, 2013 Share Posted August 5, 2013 you must open the cmd.exe as admin:http://windows.microsoft.com/en-US/windows7/How-do-I-run-an-application-once-with-a-full-administrator-access-tokenim the only user set on this pc, wouldnt that make me the admin? Link to comment Share on other sites More sharing options...
firedragon Posted August 5, 2013 Share Posted August 5, 2013 you must open the cmd.exe as admin:http://windows.microsoft.com/en-US/windows7/How-do-I-run-an-application-once-with-a-full-administrator-access-tokenim only user and account set to administrator on the pc. what am i not doing right? Link to comment Share on other sites More sharing options...
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