Win7 system CPU usage is too high how to do

1, the driver is not certified, resulting in excessive CPU resources
A large number of test version of the driver flooded the Internet, causing difficult to find the cause of the failure.
2, anti-virus software caused by the problem
Because some anti-virus, anti-virus soft added random monitoring of web pages, plug-ins, mail, undoubtedly increased the system burden, you can choose to open the service according to the situation.
3, viruses, Trojans caused
A large number of worms quickly replicated within the system, resulting in high CPU utilization rate. Solution: Use the latest anti-virus software to perform anti-virus in DOS mode. Regularly update and upgrade anti-virus software and firewalls, strengthen anti-virus awareness, and master the correct anti-virus knowledge.
4, Start -> Run -> msconfig-> Start, close unnecessary startup items, restart.
5, view & ldquo; svchost & rdquo; process
Svchost.exe is a system core process, not a virus process. However, due to the special nature of the Svchost.exe process, the virus will try to invade Svchost.exe by doing everything possible. By checking the execution path of the Svchost.exe process, you can confirm whether it is poisoned.
Enter: cmd in "Run" and enter: tasklist/svc in command line mode. The system lists the services. If you suspect that the computer may be infected by a virus and the Svchost.exe service is abnormal, you can find the exception by searching the Svchost.exe file. Generally only one Svchost.exe program in the directory: "C:WindowsSystem32” is found. If you find the Svchost.exe program in another directory, it is likely to be poisoned.
6, check the network connection
is mainly the network card.
7, unload the network card, graphics card, sound card, and then re-install the driver.