No display (sleeping). OSD = 016x 350 - 00Hz [H=.3KHz, V=0KHz]

After attempting to connect my v1907 LCD monitor to a new Dell Inspiron 660 with a discrete GT 620 graphics card, I only get messages that the monitor is going to sleep or there is no signal input. After much plugging/rearranging/replugging cables of an old VGA monitor and the DVI-to-DVI HP v1907 to various arrangements of onboard VGA and discrete VGA or DVI, I finally resorted to a close reading of the monitor owner's manual.
I now am at least able to get to the monitor's OSD after bypassing the OSD lockout, but the monitor's current settings are shown to be 016x 350 - 00Hz and H=.3KHz, V=0KHz. A factory reset seems not to work and I cannot find another means of restoring the monitor's default resolution. While in this state, and with no video cable attached, the monitor does not sleep but goes to sleep as soon as I connect the DVI input. (Default input is Digital - DVI.)
Additional info: When I first applied Windows updates to the new PC, there was one listed as optional for the 1907 monitor, however it failed to install. It then appeared the PC could not even see the monitor although I was able to use old-fashioned VGA with another monitor. (I only have a DVI-to-DVI cable for the 1907.) I was a bit surprised to see no driver listed for OS 8 and the monitor at the HP support site, but then decided to download and apply the OS 7 driver. After doing that, the PC now at least sees the monitor and even seems to think it's part of an extended desktop for the working VGA monitor, but it does not display anything. Also, the Nvidia control panel now sees the monitor and reports it as being 1440 x 900, but it still cannot actually be seen as displaying a desktop.
Might anyone have any idea what's happening? I have updated the Nvidia drivers to the most recent version released only 3 days ago. The bottom line seems to be the 1907 immediately goes to sleep when connected to the PC's GT 620. (And yes, I've read the information here at support which seems to directly address this problem, but without resolution.) Please feel free to ask for more details as I've left out a few things hoping to focus only on what's truly needed for a resolution. TIA.

I have used both the onboard and discrete VGA ports, and can get the old VGA monitor to display via either. I have connected the DVI to the 620's DVI port. In many cases, if I connect both the VGA and the DVI, the VGA vanishes. At other times, and I apologize for not knowing the precise conditions, the VGA continues and that's when it appears the 1907 is being seen as an extended desktop but nothing can be seen on the 1907.
In one scenario, I was able to see only the 1907 listed in the Nvidia control panel and when clicked to select/verify(?) it display on both the VGA monitor and the 1907 vanished--and only through seemingly random hocus pocus of rearranging cables was I able to restore to a state of the VGA being seen but the 1907 again either going to sleep as soon as it was connected via DVI or again being seen as an extension of the VGA's desktop. (Yes, a bit confusing. I'm awfully confused myself after the many connection permuations.)
Right now, the VGA monitor is connected to the onboard VGA and as soon as I connect the 1907 to the 620's DVI, the 1907 immediately goes to sleep and the VGA display turns off. If I then unplug the 1907 DVI cable, the VGA immediately reappears as a single-screen desktop on the VGA monitor. If I leave the 1907 connected via DVI and reconnect the VGA to the onboard graphics, the VGA display returns but the Nvidia control panel states there is nothing connected to the Nvidia GPU and the monitor reports there is no signal input.
At this point I cannot bring up the 1907's OSD, but by turning it off and back on and getting pass OSD lockout, I am able to bring up the 1907 OSD again and it does not go back to sleep. It then appears to remain on (per the on/off LCD and a slight very dark blue onscreen glow), but the OSD then also reports the display information I have in the posting's subject line.

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Hello again glschell,
Thank you for responding to my post requesting additional information. I am providing you with an HP Support document: Using and Adjusting Your Monitor, where you will see under the heading Using Onscreen Display (OSD) the Monitor controls and under Management you will see Sleep Timer which may be the culprit in your issue. Additionally, I am providing you with the steps needed to set your computer's sleep timer:
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Please click the "Thumbs Up" on the bottom right of this post to say thank you if you appreciate the support I provide!
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This procedure is a diagnostic test. It makes no changes to your data.
Please triple-click anywhere in the line below on this page to select it:
defaults read /Library/Preferences/SystemConfiguration/com.apple.PowerManagement | pbcopy
Copy the selected text to the Clipboard by pressing the key combination command-C.
Launch the built-in Terminal application in any of the following ways:
☞ Enter the first few letters of its name into a Spotlight search. Select it in the results (it should be at the top.)
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http://support.apple.com/kb/HT1776
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>>> n7hansen<[email protected]> 6/6/2013 2:16 PM >>>
We have installed the Client 2 SP3 (IR2) on Windows Multipoint Server
2012. On startup the error "The domain name is not valid. Please try
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in automatically without any intervention. If we uninstall the client
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https://www.novell.com/support/kb/doc.php?id=7008643
Any suggestions would be appreciated.
n7hansen
n7hansen's Profile: http://forums.novell.com/member.php?userid=138722
View this thread: http://forums.novell.com/showthread.php?t=467330

No display (sleeping). OSD = 016x 350 - 00Hz [H=.3KHz, V=0KHz]

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