HP 2509b monitor keeps displaying "Input Signal Out of Range" and then going to sleep.

[ArthurC_99]

I was gone on vacation and shutdown my computer for 2 weeks.  My monitor was working fine for a month before this.  I came home last night and turned on my system this morning.  Now I keep getting a white message box in the middle of the screen with "Input Signal Out of Range. Change Settings to 1920 x 1080 - 60Hz" and then the monitor goes to sleep.  I can turn the monitor off, wait a moment and then turn it back on again but the same thing keeps happening over and over again.  I checked and the display is already set to 1920 x 1080 - 60Hz.  I am using VGA and have the default set to this.  I followed the online troubleshooting guide for this error but it did not help.  Can someone please tell me how to fix this?

[Mister_Do]

Hi ArthurC_99,

Did you follow all the steps in this HP Support document regarding the error?

http://support.hp.com/us-en/document/c00061509

A few other questions:

What is the model number of your PC?

What operating system do you have?

Have you done anything with the PC previous to going on vacation such as upgrade software?

[007OHMSS]

Is this the online guide that you have used?

Out of range

[ArthurC_99]

Thanks for the reply.  I responded last night but do not see that my response was posted.  Did you recieve it?

[ArthurC_99]

The link you provided is the one I had followed.  It did not resolve the issue for me. 

• Windows opens, but after a while the monitor displays the message: The message pops up immediately on reboot.  I can see all of the programs coming up in the background.  I have to keep turning the monitor off and on again in order to the the system come up.

• Startup screens display, but the message opens before the Windows desktop opens: Same as above.

• The message is the only item that displays on the screen:  This is not the issue I am having.

I cannot figure out why it was working before for about a month and now, all of the sudden I have this problem.  I have a Dell Optiplax GX520 that is about 3 years old.  I am running Windows XP.  I have security updates for Windows scheduled to upload every night at 2:00 AM.  I have had security updates applied and the system rebooted a few times since I got this monitor with no issue.

[ArthurC_99]

Yes this is the guide I used.  It did not help.

[007OHMSS]

Logically, something has changed, if there is not some sort of hardware failure.

With that in mind, if it was me, I would reinstall the LCD drivers from here:

XP for 2509b

The drivers could have become corrupted through an update or something. This would correct that, if that is what happened.

The other thing I would try, would be to update the Dell's onboard video drivers. Update them from the Dell website.

[Mister_Do]

Hi ArthurC_99,

Have you tried booting into Safe Mode or Low Resolution Mode?

Try the steps in the doc linked above related to booting into Low Res mode:

http://support.hp.com/us-en/document/c00061509

That will help you discover if it is the monitor or some settings or driver issue.

[ArthurC_99]

Thanks you for the response.  I apologize for the delayed response on my part.  I have been traveling.

I did as you suggested and downloaded and reinstalled the video card driver and the monitor driver.  I then bounced the PC.  I am still having the same problem with a slight difference.  Now the box with the error message moves across the screen.

[Mister_Do]

Did you try changing the startup option to Safe Mode?