Thank you for being a valued part of the CNET community. As of December 1, 2020, the forums are in read-only format. In early 2021, CNET Forums will no longer be available. We are grateful for the participation and advice you have provided to one another over the years.

Thanks,

CNET Support

General discussion

Monitor display says no signal after several hours being off

Oct 17, 2010 12:59AM PDT

Not sure how to word the title.

Using an HP m9340f, 6 Gb RAM, Windows 7 home premium.
Monitor is Viewsonic 2230wm LCD.

The PC is set to turn off the monitor after 20 minutes of non-use, and usually a movement of the mouse will reactivate it within an hour or so.

But, after extended times of non-use, moving the mouse will not activate the monitor. It will display "no signal." Disconnecting the plug from the PC, reconnecting it, will not reactivate the display.

This prompted me to reboot (holding down the PC's power button). This will then reboot the PC normally, and the display is back to looking normally.

I don't see any instability while using the display, and the color/contrast continues to look normal.

Connections to the PC are good and tight.

Suggestions are welcome. Thanks.

Discussion is locked

- Collapse -
Re: no signal
Oct 17, 2010 1:04AM PDT

That means the PC has turned-off somehow, possibly in a hinbernate state. Have a look in the energy-saving features of the Control Panel.

If you plan to not use the PC for several hours, it saves energy to put it in hibernate mode. With my XP that can be reached by pressing shift when shutting down. That changes the stand-by option to hibernate.

Kees

- Collapse -
no signal
Oct 17, 2010 1:39AM PDT

I checked, and the power setting is for maximum performance. I'll try the hibernate mode, and see what happens. Thanks.