Thanks for good softwares ccleaner and speccy,I've use them for years and they work very well.
There's only one promblem now:
I have speccy auto start with system, auto minisize to system tray,show the temperatre of motherboard.
When it start,it show right number,but as system runs, the number never change, until I click on the icon to call the window out.After that,the number change normally.
I'm using 1.29.714 on windows 7 64bit with sp1,install update every week,using mse ,ccleaner,admuncher ,chrome and nothing else.