If you want to run the system restore from command prompt, because your explorer.exe won’t start, follow the next few steps.
1. Step Open a command prompt – you can do that via task manager (click on File, New Task and enter cmd.exe and hit enter)
2. Step Now enter rstrui.exe – the command to run system restore from command prompt
3. Step System restore will now open and you can use it.
Important: Obviously, this will NOT work if you are not logged into Windows 7.
rstrui.exe does not have any command line options as far as I know.
How to restore Windows 7 without system restore
If you can’t even log into Windows 7, I suggest that you run some basic commands first:
chkdsk /r /f
We have a very extensive tutorial that covers this topic: How to restore missing operating system