wont go to sleep

[vett]

I have my comp set to close display after a certain time limit and it dose and to sleep in one hour but it wont do that anymore it just stays on any ideas?

 

[madkiwi]

I came here looking for answers too. I updated my Nvidia drivers about 2 weeks ago and Windows screensaver and "Display turn off" are randomly working (not working). Sometimes the screensaver will work, sometimes not. The actual display turning off is only very infrequently.

No new software... except for Nvidia driver 391.35. After this started happening I did all the Windows Updates, no help at all.