Fix System Interrupts And Locate Drivers Causing High CPUIf your average CPU load is going up, one cause could be system interrupts that use a high percentage of your CPU power. In this article we will explain how to identify the bottleneck of your drivers, possibly causing a high CPU usage. Often corrupt drivers, IRQL errors, etc. CPU usage. So, if you believe your PC needs to be fixed, this will be a good starting point. Getting Started Download Windows Performance Kit DPC Latency Checker. Before you get started, we are going to download some tools to further analyze the processes. The Windows Performance Kit does a good job at finding processes and drivers that are causing a high cpu usage. Step Head over to Microsoft. Microsoft Windows SDK for Windows 7 and. NET2. Step Run and install the winsdkweb. If you already installed the Windows Debugging Tools or other included tools it will show that, simply select Change during the installation process. Step You dont have to install the C compilers or the libraries, but make sure to check the option Win. Development Tools 4. Step When you are done enter Windows Performance Tool Kit into the search bar on your Start menu, select the top result and follow the instructions. IMPORTANT If you are on 3. C Program FilesMicrosoft SDKsWindowsv. Itanium Windows. 5. Step When you are done, download another tool called DPC Latency Checker from here. IMPORTANT STEP Disable Paging Execute. Before we can use xperf to properly analyze your driver problems we have to disable paging executive. If you run the commands below without doing this you will get the error xperf warning This system is not fully configured for x. Active Directory Interview questions with answers. Learn about basic Active directory functionality. Happy learningIve worked with a lot of clients and one issue Ive seen crop up since Windows 7 was first released is random freezing. It doesnt seem to matter which pr. Please modify the registry under HKEYLOCALMACHINESystemCurrent. Control. SetControlSession ManagerMemory Managementand set the value Disable. Paging. Executive REGDWORD 1. Then reboot before retrying tracing. Note Tracing has been enabled, this is just a warning. You can either follow the instructions by opening the registry editor and changing the value to 1. D Link Pci Express Lan Card Driver. Or simply run this command via cmd reg add HKLMSystemCurrent. Device-Manager-640x365.png' alt='Best Acpi Editor Windows' title='Best Acpi Editor Windows' />Control. SetControlSession ManagerMemory Management v Disable. Paging. Executive d t REGDWORD f Using DPC Latency Checker. Now its time to use some of the tools we downloaded. First start the dpclat. If you really have some driver problems causing system interrupts you should definitely see some yellow and red bars A textbox will give you some first useful instructions Some device drivers on this machine behave bad and will probably cause drop outs in real time audio andor video streams. To isolate the misbehaving driver use Device Manager and disablere enable various devices, one at a time. Try network and W LAN adapters, modems, internal sound devices, USB host controllers, etc. Using XPerf To Find Drivers With High CPU Usage. Step. Open an elevated command prompt 2. Step Enter xperf on latency stackwalk profile. If you get the error xperf error NT Kernel Logger Cannot create a file when that file already exists 0xb. Step Wait a minute and work with your computer for a while as you normally would, then enter xperf d CPUInterrupt. The performance tool now capture all events and stored the results in a file DPCinterrupt. As the tool points out The trace you have just captured DPCInterrupt. Exact information depends on the events that were logged. Please be aware of this when sharing out this trace with other people. Step Go To C WindowsSystem. Windows Explorer Windows key E5. Step Double click on CPUInterrupt. Windows Performance Analyzer. Step After a short time, click on Trace, Configure Symbol Paths. Step For the NTSYMBOLPATH enter srvC symbolsttp msdl. Step Now scroll down to Interrupt CPU Usage, right click onto the graph and select Load Symbols. Step Next, right click again and select the bottom entry Summary Table 1. Step It is possible you have to repeat step 9 if it closes automatically, but in the end you should get this Obviously, you will have different entries. For me the file hal. Next, we have to find out what exactly hal. In your case, the USBPort. SYS or the NDIS. sys or dxgkml. If that is the case you have to research other files. Whats next Next, we recommend that you disable the components that are related to your problem. Lets say USBPort. SYS is causing the problems for you, then unplug USB devices one by one and check. Also disable USB hubs in your device manager. In General Disable network. Unplug USB devices. Disable USB hubs in device manager. Re install motherboard drivers. Upgrade BIOSUpdate graphic card drivers, update CCC. Catalyst Control CenterChange keyboardmouse.