Some users of win7 system report that their computer is running very slowly, like an old cow pulling a car. In addition to computer aging as part of the reason, it is actually related to the system. We can check the installation age of the computer. If the age of the computer system is long, the editor recommends that you reinstall the system. Let's take a look at how to check the system installation time.
In fact, we can easily achieve it with just one line of simple cmd commands.
Use the shortcut key of Win+R to bring up the "Run" window, and then enter the corresponding code below:
1. English system input:
cmd /k systeminfo | find "Original Install Date"
2. Chinese system input:
cmd /k systeminfo | find "initial install date"
It should be noted that the double quotation marks in the above two lines of commands are the double quotation marks in the English state, and do not enter the double quotation marks in the Chinese state.
Source: http://www.crxz.com/softdoc/pc/69606.html