method One: Reduce the computer to start the service item. Click the "Start" menu in the lower left corner of the computer desktop, and enter Msconfig in the run, as shown:
After you enter, press ENTER to enter the startup settings item, where you will find the startup and cancel unwanted startup items, as shown in figure:
Method Two: End the corresponding process in Task Manager. At the same time, press the Ctrl+alt+del key combination, open Task Manager, in which to find all the startup programs, to see which memory occupancy rate to the end of the program, as shown:
Method Three: see if the computer is poisoned. Computer CPU usage is too high may be after the symptoms of poisoning, your anti-virus software to the latest version, and then cut off the net overall antivirus, as shown:
Method Four: Turn off the various application effect of the computer. Right-click My Computer, select Properties, and select Advanced system settings in the attribute, as shown in the figure:
In Advanced systems, select the Advanced option, select Settings under Performance, as shown in the figure:
To remove some of the useless effects under visual effects, as shown in figure: Windows7 tutorial