Dell E6400 CPU 100% 之解决方案

Dell E6400 每次开机半个小时左右,机器 CPU 就 100% ,会感觉到底部发热, 风扇高速运转。

查看软件因素,重新安装 Windows7 Enterprise 后依然如故。

根据同事的指点,安装了 Core Temp 软件,检测每个 Core 的温度,发现系统 100% CPU 时,频率都是 800MHz,而不是可以达到的最高 2800 MHz.

查看这个帖子: http://www.tech-forums.net/pc/f9/cpu-bogging-down-no-apparent-reason-vista-home-premium-208684/

叫 Dell 更换了 CPU 风扇,一切都正常了,原来 Skype 每次启动都 100% CPU 的情况也没有了。

CPU 到 100% 时,系统日志会报如下信息:

The speed of processor 0 in group 0 is being limited by system firmware. The processor has been in this reduced performance state for 71 seconds since the last report.

The speed of processor 1 in group 0 is being limited by system firmware. The processor has been in this reduced performance state for 71 seconds since the last report.