How Win7 reduces CPU usage

            Method 1: Reduce the computer startup service item. Click the “Start” menu in the lower left corner of the desktop of the computer, and enter msconfig in the running, as shown in the figure:
After inputting, press Enter to enter the startup setting item, find the startup here, cancel the unnecessary startup items, as shown in the figure. :
Method 2: End the corresponding process in the Task Manager. At the same time press Ctrl+Alt+Del to open the task manager, find all the programs started here, and see which memory usage is high, the program ends, as shown in the figure:
Method 3: Check if the computer is poisoned . If the computer CPU usage is too high, it may be a symptom after poisoning. After upgrading your anti-virus software to the latest version, then disconnect the network to completely disinfect, as shown in the figure:
Method 4: Turn off the various application effects of the computer. Right click on my computer, select Properties, select “Advanced System” Settings in the properties, as shown in the figure:
Select “Advanced” in the "Advanced System" option, select "Settings under Performance" ”, as shown in the figure:
Cancel some useless effects under the visual effects, as shown in the figure: windows7 tutorial