Heres how to add a message with your info to Windows 10s login screen.
As tips blog Simple Help points out, these steps will work in Windows 7 and 8 as well.
In the right-hand panel, double-click legalnoticecaption.
Click OK.
Double-click legalnoticetext.
Enter a message containing your contact info, like your name, email address or phone number.
If youre willing to provide a reward, mention that too.
Click OK.
Once youre done, youll need to kickstart your PC.
How to Display a Custom Message at the Windows 10 Login Screen| Simple Help