Anyone know how to reset the display adapter monitor back to defaultsettings?

Discussion in 'Dell' started by Jay B, Dec 7, 2005.

  1. Jay B

    Jay B Guest

    I need to reset nvidia display adapter back to normal from safe mode?

    winxp system was running fine until i added new dell 1905fp monitor. the
    montior worked fine originally, then i updated the video driver from the
    nvidia site, and also the dell monitor driver from the dell site. it
    worked, then i adjusted display properties by adjusting the resolution,
    then scan rate, and now it always shows a blank screen from normal and
    vga mode start ups.

    i can get in with safe mode, but cant seem to restore the settings.
    already did a system restore to the prior day with no luck. removed the
    video drivers with no luck.

    Any ideas?

    i think it was the scan rate being set to a high value of 120, and
    that's when the screen went blank and never came back.

    yes, the 1905 works on other computers, and other montiors also are
    blank on this computer, so the problem is with the software
    configuration some where.
     
    Jay B, Dec 7, 2005
    #1
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  2. Jay B

    GHalleck Guest

    The usual way to reset the refresh rate is to start off in Safe
    mode. From the Display applet, in settings, click on the Advanced
    button. Under the Monitor tab, set the Refresh Frequency for 75 Hz
    (or something near that value). Click on the apply, close the
    dialog boxes and re-start the computer. Should take care of the
    blank screen since, IIRC, the Dell monitor should accept a refresh
    rate of ~75 Hz.
     
    GHalleck, Dec 7, 2005
    #2
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  3. Jay B

    Jay B Guest

    tried that, couldnt get to advanced, was greyed out!
    very weird, never seen anything quite like this.

    i'm going to try and hack the registry next,
    i see settings under this key:

    HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Control
    Panel\Settings\Video

    thanks.
     
    Jay B, Dec 7, 2005
    #3
  4. i suggest deleteing the video display adapter from system properties while
    in safe mode.
    it should be automatically added back when you restart normally.
    it sounds as if you have set it to resolution and/or the refresh rate too
    high for the 1905fp and your other monitors.
    the native resolution for the 1905fp is 1280x1024 @ 60hz (higher refresh
    rate is meaningless since this is a lcd display - there is no flicker like a
    crt would have). the 1905fp is capable of automatically detecting a signal
    up to 76hz.
     
    Christopher Muto, Dec 7, 2005
    #4
  5. Jay B

    Jay B Guest

    Thanks Chris
    of course i removed from device manager several times and it does come
    back and prompts for a driver, i tried to skip it, put in the new driver
    again, and each time i still get the blank screen afterward.
    the other weird thing is that there were 4 monitors listed under the
    montitor section. and after deleting them, they are all gone and cant
    get anything else to go back in there, not even the 1905.
    -Jay
     
    Jay B, Dec 7, 2005
    #5
  6. you get a prompt to locate drivers for the video card and you try to skip
    it?
    do i understand that correctly?
    sounds like you need the driver from the dell site.
     
    Christopher Muto, Dec 7, 2005
    #6
  7. Jay B

    hdrdtd Guest

    OK, here's a crazy thought.
    What is the chance that the Display settings in Windows were set yo use the
    Digital connector rather than the Analog?

    The 1905 should have connectors and cable to be able to hook up to either
    DVI or Analog outputs on the video card.

    IF for some reason, the Display settings are set for Digital, but you are
    only hooking up the Analog port on the 1905, You won't see anything.
    Been there, done that.....

    Without reading back through the entire thread, When you first power up the
    system, do you see ANYTHING on the screen before it gets to Windows? The
    normal BIOS screens should be coming out of the analog port of the video
    card.

    If you see that, but the screen goes blank one it gets into Windows, then
    Windows may be set to Digital mode. Quite possible that during Safe Mode,
    Windows would default to Analog, so you would be able to see things in Safe
    mode.

    If it's set to Digital, that would also explain why it works on other
    computers yet other monitors aren't working on it.

    Just for grins, hook up both the Analog and the DVI cables from the 1905 to
    the video card, and start Windows.

    One of the buttons (middle one?) on the 1905 should switch it from analog to
    digital mode. (I have a 1901, the 1905 may be a bit different). Boot the
    system to Windows and try switching the monitor between Analog and Digital
    modes to see if that makes a difference.

    Just a thought , unless of course you already tried that.
     
    hdrdtd, Dec 7, 2005
    #7
  8. Jay B

    Jay B Guest

    yes- downloaded latest dell drivers,
    i've tried many times with reinstalling, still blank screen.
    also skipped it to see if it would work with std vga drivers, thinking
    the newest drivers from dell web site are defective somehow.
     
    Jay B, Dec 7, 2005
    #8
  9. Jay B

    Jay B Guest

    very nice thoughts indeed.
    yes already tried that to no avail.
    the screen works fine upon bootup, bios is good, safemode is good,
    you're probably right, its the digital mode that seems to be bad,
    had both cables connected at the same time to 2 different flat panels,
    one in analog and one in digital, the analog started up and then blanked
    out.

    could it be that the digital port on the card blew out by running the
    scan rate too high?? never seen that before. will try pulling another
    card from another computer. tried another spare nvidia and it also was
    blank. couldnt find a 2nd spare sitting around. i need an older style AGP.

    i'm getting busy on another project so will have more time to play with
    this much later. thanks again.
     
    Jay B, Dec 7, 2005
    #9
  10. could it be that you have both an analog cable and a digital cable pluged
    into the monitor at the same time?
     
    Christopher Muto, Dec 7, 2005
    #10
  11. Jay B

    Jay B Guest

    i did try that at one point to see which was working, but not usually.
    but even so that should still work, shouldnt it.
    i've had 2 cables in before and it worked. in fact, i would think it
    could be used as a poor man's KVM. and switch between 2 systems, but
    havnt had the need to try it myself.
     
    Jay B, Dec 7, 2005
    #11
  12. my recolection is that connecting the dvi cable to the monitor without the
    other end even being connected to a computer confuses the 1905fp and makes
    it ignore the analog... but that memory is from a problem from quite a
    while ago... so i just summize it as using both cable equals trouble...
    certainly not to be done while you are trying to troubleshoot a problem.
     
    Christopher Muto, Dec 7, 2005
    #12
  13. Jay B

    hdrdtd Guest

    Again, I have a 1901 and not the 1905, but with the 1901 ultrasharp, yes you
    can hook up both cable at the same time with no problem, and use the middle
    button on the monitor to switch between digital and analog mode.

    For a while, i WAS using both cables as a poor man's KVM switch.

    Digital cable went to one system and the analog cable went to a second
    system. no problems.

    The fact that it displays the BIOS screens fine tells me that the analog
    portion of the card and the monitor are working fine.

    When Windows starts and the screen blanks, that definatly sounds like the
    video has switched to digital mode. For the testing phase, I'd make sure you
    have both cables DVI and analog connected.

    After Windows loads, and the screen goes blank, have you tried pressing the
    button on the display to switch it to digital mode?

    It's 'possible' that even if you put a different Nvidia card in the system,
    the display drivers will still retain thier settings since they're both
    Nvidia cards, and it may still be in Digital mode.

    I'd be real tempted (if you haven't already done so) to bring it up in Safe
    mode, and chage BOTH the video driver AND the monitor to some generic VGA
    equivilant. in an effort to get running using a plain vanilla VGA driver
    that doesn't know about digital mode at all, and make sure to change the
    settings to 640x480x16 colors at 60Hz.

    What about starting in safe mode, the checking the Nvidia driver settings to
    see if it is indeed set to digital and if it is, switch it to analog.
     
    hdrdtd, Dec 7, 2005
    #13
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