My screensaver will come on and in about 25-35 min it goes off what could be the

[Guest]

My screensaver comes on fine. It just goes off without me doing anything in about 25-35 min. How can I solve this?

 

[Saga Lout]

My screensaver comes on fine. It just goes off without me doing anything in about 25-35 min. How can I solve this?

The system might be set to go into Standby after that amount of time. Have a look in Control Panel>Power Options.