Monitor won't sleep

[Omail710]

I am running Vista Ultimate 64 bit, SP2 on an HPd5000t with an HPw2338h monitor with GeForce GTS 250 video card, driver 8.15.11.8627.  Until 2 days ago, when the computer went to sleep so did the monitor with the power button turning from green to yellow.  Now when the computer sleeps, I get a black screen with a moving white box saying "no input signal" with a red, green and blue band at the bottom.  If I try to use the power button, I get the same box with the message "power button lockout".  Other than adding speakers, and Windows updates (since the problem began), there have been no other changes.

How can I get back to a sleeping monitor when appropriate?

[Omail710 · Accepted solution]

With email help from Bibin, I was able to solve my own problem.Bibin suggested the following site:

http://support.hp.com/us-en/document/c01632269

which led me to the answer.  Using the monitor controls, I went from Menu to OSD to Management and found Power Saver was off.  After setting it to ON, the monitor now sleeps properly.

I hope this may help someone else with the problem.

[HP-Sick]

I have a HP PAVILION 23-F202A that I set to screen off after 2 minutes of inactivity and sleep after 10 minutes. But even then the monitor screen does not go to sleep. I am worried that it is warming up too much. Grateful for a simple yet effective suggestion.