Windows 7 high CPU wuauserv

Similar Questions

• Windows Explorer high cpu use jn 9

  Computer freezes & I have to restart my computer

  Hello

  (1) do you have made no changes before this problem?
  (2) you receive an error message then the closure of the computer?
   
  Follow the steps from the links below and check if it helps.
   
  Method 1: You can check if the Windows Task Manager also shows high CPU usage. To do this, follow the steps mentioned in the link.
  See details about your computer's performance using Task Manager
  http://Windows.Microsoft.com/en-us/Windows-Vista/see-details-about-your-computers-performance-using-Task-Manager

   

  Method 2: Follow the instructions in Internet Explorer 9 from the link below and check if it makes a difference.
  Use the software instead of rendering GPU rendering
  http://support.Microsoft.com/kb/2398082

   
  Method 3: Run the FIXIT from the link below, and if that helps.
  Solve Internet Explorer add-on problems when IE hangs or freezes
  http://support.Microsoft.com/mats/ie_freezes_or_crashes/en-us
   
  Hope this information helps.
   
   

• Windows Vista High CPU usage

  Everytime I open Windows Media Player and Internet Explorer, the CPU usage goes to 95% to 100%. Windows Media Player also responds to slow down even if it's the only program that is open.

  The problem started when I installed McAfee Internet Security and what Vaio Media settings have been configured.

  Please help how to solve this problem.

  Thank you.

  Hello

  Seems to me that you already answered your own question. Uninstall the McAfee software, the problem goes away? Good luck, Rick Rogers, aka "Crazy" - Microsoft MVP http://mvp.support.microsoft.com Windows help - www.rickrogers.org

• Desktop Windows 7 high CPU utilization

  I have a HP p6744y and for the last month the CPU worked 100% almost constantly. Read as many blogs ran so many viruses, malware and kill root programs without help. When I check treats all users, it lists svchost.exe sometimes ranked at 90 to the title using 7 236 k memory and local services. How can I make this stop before I kill this computer? I must say I think started after I installed an update of Java, could this be the cause? I read where you asked people to uninstall programs until it is resolved, but I'm sure that's the answer to my problem of nit. I hope you can help me. Thank you for your time.

  In order to diagnose your problem, we need run Windows performance toolkit, the instructions that are in this wiki

  If you have any questions do not hesitate to ask

  
  

  Please run the trace when you encounter the problem

• Windows 7 update - slow download, svchost high CPU usage

  I have a problem downloading by using the Windows Update application. This problem started after January 2016.  In the past, the request of update seems to work without the use of the svchost high CPU and with a reasonable download time.  There is usually a delay until the download has started, but then they ended quickly.

  I have 4 computers: 3 running Windows 7 Pro (CPU - Intel dual, i5 & i7) and 1 running Windows 7 Home (Intel i3).  If the problem is not related to the CPU hardware as best I can tell.

  My update setting is 'check for updates but let me download and install ".

  The Windows Update process includes 3 steps:
  1. identify the important and recommended updates for your computer.
  2. the selection and download updates.
  3. the creation of the restore point and of the installation, the selected updates.

  My problem is step 2, download the selected updates.  This happens on all 4 systems, and I do not expect a download to be this CPU load.  The download time is too long on all systems 4.

  My online search for answers has been frustrating, but several posts said search for viruses, malware and Trojans.  I ran Malwarebytes (free), Windows Defender, Norton Security and ESET (online) on systems and no objects are found.

  My most recent experience involved my Lenovo 7847 system (Intel dual core). Monday, May 23, I checked the updates and there were 15 updates important and 3 optional updates listed.

  After reviewing the updates, I chose the 15 updates and started the download process.  The svchost.exe that is associated with the update happened to 45-60% CPU usage, update status showed no size or % finished and the task manager - network or explore the process did not show any activity download for a long time.

  Finally, after about an hour, the update showed the download size and the % downloaded.  Svchost usage remains high during the time of whole download.  Once the download is complete, the restore point was created and updates have been installed, who also took some time (but it would be I/O CPU & Drive dependent).

  The download status has not changed during most of the time that the download process is running.  The Task Manager and process explore both show very little network activity up to that very near the end of the download procedure. There is therefore no real indication that the process is blocked or just turn very slowly.   It almost seems that the Microsoft servers are overloaded, they delay the download for some reason, or the process svchost and sub-process fail to create good handshake with the server for download.

  My Questions:

  1. Why is svchost usage so high when nothing seems to happen?
  2. Why does take an hour or more to download the updates?  These aren't the huge file sizes, and this attempt to update was almost 2 weeks after Patch Tuesday, then Microsoft servers should not be overloaded.
  3. Why is the situation unchanged for so long during the download process?
  4. most important, what can I do to change this situation?
   
  Thanks in advance for your help.

  My 'update problem' seems to have changed.  Checking updates takes a lot of CPU resources and a lot of time.

  We will leave well enough alone for now. [It took 3-4 hours for MU download/install updates of June on my Win7 boxes].

  But please bookmark this thread. If the behavior persists in July - and especially in August, respond to this thread instead of starting a new. Good luck!

• Windows Update causes high CPU AND not let me install Windows 10

  Windows 7 update has several issues:

  1 Windows Update Service causes the CPU usage high - CPU usually works 50% or more with a single SVCHOST.exe running.  I click with the right button on the SVCHOST entry in Task Manager-processes and saw all the services that SVCHOST is still running.  One at a time, I stopped and restarted them.  Finally, when I stopped the Windows Update service, the cpu immediately fell to almost nothing.  I rebooted and tested several times, and each time, it was Windows Update service that was causing the high CPU.

  2. Windows 10 Upgrade Advisor says I could upgrade to Windows 10, and get the icon Windows 10 is in the toolbar.  But it has failed to install several times.  Now, after stopping and restarting the service of updating (and I checked, it is started), the window get Windows 10 rises, is empty and goes.

  3. I ran the Update Diagnostic and got 1 error:

  Windows Update error 0 x 80070003(2016-04-04-T-04_56_09P)

  the Details of the Diag Windows Update window said:

  RootCause: RC-DataStore

  Error code: 0 x 80070003

  4. I tried to launch the 'Fixit' for update, but it did nothing.

  5. I tried to update Windows Update WindowsUpdateAgent30 - x 64 .exe Agent,

  but it fails with this message:

  "Windows Update Agent Installer has met a fatal error"

  6. when I try to start Windows Update-check for updates, it displays the dialog box "check for Updates" and activity indicator green runs and runs and runs for more than 10 minutes but nothing happens.  And when I check the view update history, it shows no updates, even though I know that I've run a LOT of updates in recent years.

  7. I thought to reinstall Windows 7.  I went to download from Microsoft, and when repair installation it activated my key it says that it wasn't a retail version, so check with the supplier (in this case HP).  I checked with HP and they said that this machine was is no longer supported.

  8. on the way I've renamed the folder C:\Windows\SoftwareDistribution-Windows SDOLD, force it to create a new (probably why it does not find the old updates).  IT did not help.

  So it seems to me this machine is expandable to 10 Windows (it meets the specifications and the Advisor to update Windows-10 said yes and installed the toolbar).  But something is wrong, probably with Windows Updater, and now nothing will be update or upgrade.  And I can't get a new copy of Windows 7.

  So, any thoughts?  I'm out of ideas.

  All I can say is to ensure that you have the latest Net framework installed manually 4.6.1
  https://www.Microsoft.com/en-US/Download/details.aspx?ID=49982

  And the most recent client update
  https://support.Microsoft.com/en-us/KB/3138612

  Also manually install it kb3136000

  https://support.Microsoft.com/en-us/KB/3136000

• High CPU in Windows 7 between 80 to 100% usage

  * Original title: help! High utilization of the processor and corrupted files

  I have a Windows 7 computer. I had a very high cpu usage these days. When I run nothing it is between 80 and 100%. I tried to run spybot and malware bytes on normal and clean boot and nothing fixed. I ran SFC/scannow on boot and he says that some corrupt files can be fixed. I also tried a cleaning of windows security program and that did nothing no more. I know things high cpu is idle system, rndll32.exe, mcafeeshield.exe, perfmon.exe svhost.exe, one of these. I tried to follow which one in monitor resource but I could not find the culprit. The computer certainly did not raise cpu mode start minimum btw. I tried to stop some services too such that windows update is stopped and still nothing. Help, please!

  In order to diagnose your problem, we need run Windows performance toolkit, the instructions that are in this wiki

  If you have any questions do not hesitate to ask
  
  
  Please run the trace when you encounter the problem

• Satellite P300-212 - system causes the periodic high CPU load

  Windows Vista Edition Home Premium (OEM) on the Toshiba Satellite P300-212

  Even on a system Windows freshly installed (from recovery DVDs), the system process (PID 4, NT Kernel & System) causes on a regular basis (every five minutes) a CPU load high for a few seconds, during which the system hangs, not even the mouse pointer can be moved.
  Sysinternals Process Explorer identifies the thread of high load as "ntkrnlpa.exe! ExfTryAcquirePushLockShared + 0 x 15 2 "with the thread ID 20 or 24.

  Does anyone have an explanation for this behavior or a solution to the problem?

  Hey,.

  If you have installed Windows recovery disk Toshiba but still high CPU usage? Hmm that's strange because this image is tested by Toshiba

  Have you installed or uninstalled any software or tools?
  I uninstall the current antivirus and disable some start up programs you n t need in msconfig. Usually, this should work.

• Tecra M2 - stop hard on high CPU (turns off with no BSOD)

  Experienced stops consistent when the CPU is running at full during a little while.
  -J' mean 'stops' complete power cut with no blue screen of death where all is lost and the computer must be restarted manually.
  -by "high CPU", I mean when the processor locks to full use such that when you insert a column in a big Excel sheet with errors or if you want a large number of files and you open a video from the network or when you run a registry scan and antivirus analysis at the same time.

  The problem took place regularly for a few months and I can now make a case with greater predictability. Using the hardware monitor suite 'Everest', it seems that the problem occurs when the temperature of the CPU is located at 99 for more than a minute or more.

  This happens with some, but never when batteries run - then attempts to force the error, it will not be stopped if the power cable is released just before the drop point.

  In the cases of the problem, it seems to be a small error message appearing only a fraction of a second before the death of the computer.

  Each reference forum and help that I read would suggest the problem is related material and that the chip or the motherboard is overheating and need replacement. While the laptop is almost 18 months old, I bought a new ' everything except the screen and HDD "earlier this year, and was not prepared to accept the explanation without more tests.

  Kantonix Linux works very well and the CD starts seems to tax the processor as much as the same events that kill for me under XP.

  A few weeks back, I installed Windows XP on a second HARD drive in the Bay of hotswappable and noted the installation seems to work pretty hot computer and he died during the process. It has experienced no difficulties for while but, a few days after moving the HARD drive reinstalled in the primary position and after you have reinstalled a lot a lot of applications, the error started happening again.

  Last night I caught a few fractions of a second before the death, the pulling power and stop the process and allow me to see the error message (as mentioned above):

  -first message came from "TOSHIBA Power Saver" saying "a fatal error occurred at x 06" (not sure about the last bit) ".

  -second message was "THotkey.exe' saying 'could not load powrprof.dll.

  -monitoring of several hundred cases of the second message.

  Because of the error messages, I was not able to get a print screen.

  Solutions or even on ideas that would be very appreciated!

  Post edited by: DC-financial

  Hello

  According to your explanations and the information in your ad, I think that the problem is related to the software.
  You wrote something about energy saving. This Toshiba utility controls the speed of the CPU and the use of cooling modules.
  I think that this request could be responsible by the judgments. Try reinstalling this utility.
  In addition, check the configuration of the unique power plans. If you work only with battery energy saver using another mode of power supply as working on AC.
  I think you could check these consumption patterns and configure it.

  Verification of the cooling module is also not a bad idea. Maybe fans cannot work properly because of the dust and debris inside the books.
  I use the vacuum cleaner to clean the fans. CA? s an easy way to make it free of dust.
  But if you get it, you must be careful.

• Is short boot fail reason (error 1000-0146) Office of glitter and high cpu?

  Dell inspiron 6000. Windows xp professional sp 3. Three weeks ago, my computer started loud beep on startup and sparkle of the desktop icons. The touchpad has stopped working for a while, but most of the time which is fixed. I installed malwarebytes' eliminating about four Trojan horses and tried to update all the drivers. I did a restore of the system about 3 times. When I ran a test drive, there was a failed test short boot 1000-0146 error. When my app icons start to Flash my cpu jumps to 100%. Pressing any key usually stopped for a bit. Is this a compatibility issue with my software or the failure of short boot is the cause. Help!

  Hi Nutmeg30,

  • Did you the latest changes on the computer?
  • You have security software installed on the computer?

  Learn more about the test of startup failures see link below on the Dell site and check if it helps.

  Pre Boot System Assessment (PSA) Diagnostics and Error Codes for Dell computers

  http://support.Dell.com/support/topics/global.aspx/support/KCS/document?docid=DSN_300428&isLegacy=true

  It is possible that some third-party programs installed on the computer is causing the flickering and high CPU utilization issue.

  I suggest that you configure the computer in a clean boot state and check if it helps.

  To help resolve the error and other messages, you can start Windows XP by using a minimal set of drivers and startup programs. This type of boot is known as a "clean boot". A clean boot helps eliminate software conflicts.

  See section to learn more about how to clean boot.

  How to configure Windows XP to start in a "clean boot" State

  http://support.Microsoft.com/kb/310353

  Reset the computer to start as usual

  When you are finished troubleshooting, follow these steps to reset the computer to start as usual:

  1. Click Start , and then click run.
  2. Type msconfig , and then click OK.
     The System Configuration utility dialog box appears.
  3. Click the general tab, click Normal Startup - load all device drivers and services , and then click OK.
  4. When you are prompted, click restart to restart the computer.

• High CPU usage by "System outages" and missing keystrokes in IE on all new HP laptop 15-r085nd

  I recently bought a HP15-r085nd (Win 8.1 with Bing), and right out of the box, I encountered this problem:

  After the awakening of the mode (usually after the first time to wake from sleep mode, but always after the second time), the process "System outages" has high utilization of the processor, up to 45%. The laptop then responds very, very slow. In addition, in Internet Explorer (but only in Internet Explorer, it seems!) strikes are missing out.

  I tried the following:

  -Implementation of all the updates of Windows, all McAfee updates and all of the updates from HP Assistent. No results.

  -Reinstall all the drivers, no results. Windows system restore: no result. Factory reset the recovery partition: no result. Then implemented all the updates again: no result.

  -J' tried to use Microsoft Xperf to diagnose the problem: it seems wdf0100.sys to blame for the high CPU usage. (In other words, if I have interpreted the results in the right way).

  -J' then did some troubleshooting with Microsoft Support: they asked me to disable all startup items in the Task Manager and disable all non-Microsoft services in msconfig. The result was that the high CPU usage of "System interrupts" occurred less frequently after the first time out of the way 'sleep', but still she always had after the second time to wake off mode 'sleep'. Uninstallation of McAfee seems to have the same effect, by the way.

  -J' then did some troubleshooting with the store were I bought it. They used a pilot program to install newer versions of the drivers. Also, in vain.

  Then they gave me another laptop of the same model (r085nd). It had exactly the same problems. So I think that all laptops of this model have the same problem! Does anyone know of a similar case with a laptop similar?

  -J' then did some troubleshooting with HP support. We have updated the BIOS (F.24), without result. We have made a few updates to additional drivers on the HP site, no results. We wanted to update the graphic driver Intel HD (sp65598), but we couldn't install it, an error message saying: minimum system requirements were not satisfied.

  I hope that the HP support can arrive at a solution (they wanted to deepen this). If so, I'll promise to post it here, because it affects probably other r085nd HP as well.

  In the mean time, I'd appreciate any suggestions, because I'm totally confused now. Someone at - it ideas? I will answer all the answers!

  I was contacted by HP Support again. After a new series of updates which included some updates everything new on the site of HP is solved the problem with high CPU usage by "system outages"!

  We have done several updates, so I know not that exactly solved the problem, but it is those:

  -New firmware BIOS: version F.33 (my bet would be that is the one that solves the problem)

  -New Intel chipset driver: 1.20 (sp69575.exe)

  -New driver Intel HD Graphics: 1.20 (sp69589.exe): 10.18.10.3958 (this one tried earlier, without solving the problem)

  -New driver Realtek card reader: 1.20Ap3 (sp69610.exe)

  I hope this helps other people with the same problem.

  Thanks to the HP Support team for their help with this problem!

  Moreover, the problem of lack of strikes in Internet Explorer (more use of CPU (any reason), the sequences of keys more are not registered!) still exists! I work around this problem by using Google Chrome. Again, I hope that this issue might get resolved as well! I nevertheless marks it as "Resolved" as the main problem is resolved.

• High CPU and disk utilization slows down the response

  Two years, Pavilion dv7 - 2273ca running Windows 7 64-bit; Norton 360; IE8; Thunderbird; Microsoft Office 2007.  Tend to have several windows open at the same time.  For automatic updates

  Almost every day the laptop enters a period of very high CPU usage; often accompanied by high disk usage.  The response time of the laptop is compromised to the point that I often have to stop using it until activity slows.  I try to use the resource monitor, but do not know enough to say if the legitimate operations or something wrong.  Norton frequently shows svchost.exe and iexplore.exe as a heavy user of the CPU.

  Is this a normal behavior?  If not - any advice on how to identify the culprit?

  On the advice of a HP technician, I ran check disk, and then restore the system in August.  end hard drive.  System Restore did not difference in performance.

  Most of the processor have more of the base, there will be a CPU 0 and 1 for the dual core processors. Different colors are different carrots 0 and 1

  If you sort as I proposed that the highest CPU usage will float to the top, you have to watch it when your cpu pork starts to act up.

  The colors of disc are reading and writing, its hard disk is read or write data on the trays.

  A high utilization of the processor or disk can be considered normal at times, but should not go on constantly.and by dragging down the performance of the system

  Lets say you run a video in your browser, the CPU usage rises, running other programs can do the same thing.

  The disk activity can be high at times also, depends on what you do on the PC, but shouldn't be high all the time.

  http://www.TechRepublic.com/blog/window-on-Windows/learn-how-to-use-the-Windows-7-resource-monitor-for-effective-troubleshooting/3139

  http://www.PCWorld.com/article/241677/how_to_use_resource_monitor.html

• problem with high CPU usage audiodg.exe

  While playing the game, I get a message saying that I raised the CPU usage 99% of the base. This is caused by "audiodg.exe. I tried a few bugs that I found online. I was told that they would not work with my computer. I have a Dell XPS15 second-generation i5. Has anyone experience this problem?

  Hello

  1. what you did to solve the problem?

  audiodg.exe [Windows Audio Device Graph Isolation] file hosts the audio engine for Vista and Window s 7.

  All DSP [Digital Signal Processing] and audio processing is done within this file. Suppliers are able to install their own audio effects and DSP in the audio pipeline, which is then processed by audiodg.exe

  In order to correct the high CPU usage, disable audio enhancements addressed by the file audiodg.exe. To disable the audio improvements, follow these steps:
  a. right click on the speaker in the lower corner icon right.

  b. Select the playback device from the menu. A list of devices should appear on the screen.

  c. double-click the device that has a green check mark. The properties for the device windows should open.

  d. click the improvements at the top.

  e. in the list of improvements, uncheck all the, or check Disable all improvements.

  f. click on the OK button to save your changes and close the window.

  g. click OK to close the devices window of reading.

  I would also say that you use resource monitor to monitor the CPU usage.

  Resource monitor is a tool that allows you to analyze the use of the CPU, disk, network, and memory in real time.

  You can use the performance tab in the Manager of tasks to see how the CPU of your computer is used by Windows and other programs running on your computer.

  Reference:

  See use of CPU utilization and other performance information

  http://Windows.Microsoft.com/en-us/Windows7/view-CPU-utilization-and-other-performance-information

• Use high CPU (35% average) while System Idle process CPU about 98% but frustrated by "[name of the prog] has stopped working".

  Hello

  I am trying to help someone with a laptop HP model g6-1202sa (Windows 7 Home Premium 64 - bit, another record at the end of the post).

  I think that Windows is now updated and drivers, but the problem remains also.

  The laptop has the symptoms mentioned in the title I found the Manager tasks.  Laptop fan is on a large part of the time, and the owner says that, during the execution of something more intensive than Skype for example of internet browsing, they get a warning from Norton on high CPU. Resource monitor shows that system interrupts are on average about 31% CPU.

  The results, I found the task manager has led to some research on Google, which in turn led me to want to run adksetup.exe (Windows Assessment and Deployment Kit) in the hope of discovering if a particular driver is causing the problem. (Various threads on the internet point to what is the way to go).

  However, after downloading adksetup.exe, when I try to launch it I get the initial screen of Toolbox and then 'assessment of Windows and the deployment for Windows 8.1 Kit has stopped working ". (Verification of the solution finally gives the only option to "Close the program").  Similarly, I have now discovered that if I try to look at the properties of the computer, i.e. start > right click on computer > left click on properties, I get "Windows Explorer has stopped working". Do more research on Google I find sometimes I get "Internet Explorer has stopped working" sometimes (Chrome is ok).  More out of curiosity than anything specific I ran AMD VISION Engine Control Center after right click on the desktop and ended with 'Catalyst Control Center; The host Application has stopped working".

  So before going any further, does anyone have any ideas what's happening?   I do not understand the problems 'has stopped working"in safe mode, but the high utilization of the processor with System Idle Process around 98% is still there.  It appears so that I can run adksetup.exe in safe mode while this would be the way to proceed and continue to try to tackle the problem of CPU?

  For the record, some of the things I've done along the way include update of Windows, updating drivers, running the file system (no violation of integrity) checker, a regular chkdsk ("CHKDSK discovered free space marked allocated in the master file table (MFT) bitmap. Correcting errors in the volume bitmap. Windows has made corrections to the file system").  Swapped the only module memory 4GB 2 x 1 GB modules I had to hang out, all the symptoms remained 4 GB then reinstalled.

  Thanks for the tips

  HP g6-1202sa Windows 7 Home Premium 64-bit

  4 GB of ram

  AMD A4 - 3300M APU with graphics Radeon (TM) HD 1900 MHz

  523 GB of free disk space

  WE

  Since the observer event logs, these are some of the problems

  Software connection of 1 hp mgr is damaged and needs to be installed.  There are literally hundreds (or even thousands of these errors)

  Cannot find the description for the ID of the event source hpCMSrv 5. Either the component that triggers this event is not installed on your local computer or the installation is corrupted. You can install or repair the component on the local computer.

  The failing application name: hpConnectionManager.exe, version: 4.1.23.1, time stamp: 0x4df7dbef

  2 - the description for event ID 0 in source AdvancedSystemCareService8 is not found. Remove

  3 - Media center is corrupt (updated)

  The description for event ID 0 in source MCUpdate is not found. Either the component that triggers this event is not installed on your local computer or the installation is corrupted.

  Workouts 4 - sky are corupt

  Session "SkyDriveSessionName" was able to start with the following error: 0xC0000022

  5 - the description for the ID of the event source BtFilter 26 is not found

  6 - hundreds of Cvhsvc.exe is a part of the virtualization Client Microsoft Microsoft Office Service... Errors

  The description for event ID 100 from source CVHSVC is not found.

  7. the description of event ID 3057 source client Application Virtualization Client cannot be found.

  As you can see there are at least a dozen of them which are probably related to the high utilization of the processor.

  The drivers are not updated (Bet you checked in the Manager device or with a sweeper driver as app)

  To be honest I don't see how SFC returned no breach of integrity account required to this type of problems.

  It might just be easier to re - install win 7, but I'm happy to help anyway

• unknown material interruptions & DPC causing high CPU usage

  After having hard time find a way to solve this problem

  Please take a look at these links

  http://postimg.org/image/ynx7o0gi1/

  http://postimg.org/image/j3ptxh6dl/

  Thanks for all the entries...

  Hello

  Thanks for posting your question on the Forums of community of Microsoft.
   
  1. don't you make changes to the computer before the show?
  2. What is the brand and model of the computer?
  3. the computer is on a domain network?
   
  These activities [interruptions and DPC] high CPU consumption may indicate a hardware problem or problems with the device driver.
   
  Method 1:
  I suggest you to update the chipset and BIOS drivers on the computer and check if it helps.
  Reference:
  Updated a hardware driver that is not working properly
  http://Windows.Microsoft.com/en-us/Windows7/update-a-driver-for-hardware-that-isn ' t-work correctly
  Also, try to download and install the latest chipset and BIOS drivers for the computer from the manufacturer's website.
   
  Method 2:
  I ask you to check if the problem persists after disconnecting all external devices (except keyboard and mouse).

   

  Method 3:

  Run the hardware troubleshooter and devices.

  http://Windows.Microsoft.com/en-us/Windows7/open-the-hardware-and-devices-Troubleshooter

   

  Method 4:

  Check if the problem occurs in the boot.

  Reference:

  How to perform a clean boot for a problem in Windows Vista, Windows 7 or Windows 8
  http://support.Microsoft.com/kb/929135

  Note: See "How to reset the computer to start as usual after a clean boot troubleshooting"

  under more information to prepare the computer to start as usual after a repair.

   
  Also check out these links for more information:
   
  Analyzing interrupt and DPC activity
  http://TechNet.Microsoft.com/en-us/library/cc938646.aspx
   
  Follow-up of interruptions
  http://TechNet.Microsoft.com/en-us/library/cc940374.aspx
   
  Start followed by performance guide
  http://TechNet.Microsoft.com/en-us/library/dd744567 (v = ws.10) .aspx
   
  Thank you.