If you want to find out when your computer manufactured then use serial key for that. If you don't know serial number then BIOS is the another option to check when BIOS is installed in com i.e. when your PC is built. So to know that RUN (by pressing win + R) and type msinfo32 and you will get the BIOS manufacturing date.
There are couple of Run commands for Windows update. The run commands are very handy to launch an application quickly without the need to find the same in list of programs. Windows has a run command for almost every application. You can also use Command Prompt to update Windows.
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