Method One:
Start-run-Enter cmd--input systeminfo (the system information is in this command)
If the prompt is not a workaround for internal commands of the system:
① environment variable is configured as%systemroot%\system32\
② Find C:\Windows\System32 If there are systeminfo.exe files, if not to the same operating system copy a copy to this directory
Method Two:
1. Start-run--regedit--into "HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows NT\CurrentVersion"
2. Double click "InstallDate", switch to 10, copy the data
3. Paste to http://www.onlineconversion.com/unix_time.htm on this website
Method Three:
Right-click My Computer--manage--Event Viewer--windows Log--system--Find the earliest time from the source to EventLog is the installed system time
(If your system is ghost, the time recorded is the system installation time of Ghost)
Check the installation time of your computer system