Hello Oak11, welcome to PCHF.
It sounds like you don't have a password set on your Administrator/user account. By default, you will not be able to use the scheduler on an account that doesn't have a password. There are options:
1) Set a password the account you want to use a scheduler on.
If you don't want to logon to the account each time you start the PC, then you can use something like TweakUI (
Download Tweak UI 2.1 - filehippo.com), which you can use to auto logon with that password.
2) Alter your security policies (not always available).
- Go to
My Computer, Control Panel, Administrative Tools followed by
Local Security Policy.
- From here, click on the
Local Policies category,
Security Options.
- In the right hand pane, double click on "Accounts: Limit local account use of blank
passwords to Console logon only" and set it to
Disable (Turn it off).