All-round check of causes of slow Win7 System

I believe that Windows Task Manager is known for all the causes of Windows system slowdown, but you may not know that Windows 7 comes with an exceptionally powerful tool-"Resource Monitor ", it is hidden in the "performance" tab of Windows Task Manager. Of course, you can also enter "Resource Management" or "resmon" in "Start> search box" to find it. Then we can see the five tabs of the Resource Monitor: Overview, CPU, memory, disk, and network. In the overview tab, you can view the real-time CPU, memory, disk, and network information. The data is displayed in this set. In the CPU, disk, and network tags, you can select an image and then automatically filter the corresponding information below. So, how can I use resource monitor to find out the culprit of occupying a large amount of system resources and slowing down the computer? I want to play a short high-definition video clip (with a resolution of 3840x2160). The video clip has a bit rate of up to 60 mbps and naturally occupies a large amount of system resources during playback. I use quickplay to open this short video, view the CPU tab of the Resource Monitor, and click "CPU" to sort it in descending order. We can see that QvodPlayer.exe, the first program to be played, occupies nearly 70% of the CPU resources. In addition to other processes, the total CPU usage is close to 100%. Of course, the system cannot load. You can also use this method to view the memory, disk, and network usage. For example, when searching for processes that consume disk resources, we can also select the first process. In the "disk activity" column below, which disk files are being operated by the process. If an abnormal process is found, end it.