The monitor does not go off according to the power system

[Sefton B]

For the past few months the monitor will not go off after the computer is
inactive for 15 minutes. It has been set that way since I got it and worked
fine. That is the way I set the pwer system to operate.
Now the screen will go off only if I turn it off myself. Any ideas?

 

[Bob I]

What do you do just before this stopped working? Video driver change?
Wireless mouse install? Software installs?

Sefton B wrote:

> For the past few months the monitor will not go off after the computer is
> inactive for 15 minutes. It has been set that way since I got it and worked
> fine. That is the way I set the pwer system to operate.
> Now the screen will go off only if I turn it off myself. Any ideas?