How can I fix a runtime error that comes up before the login screen in Windows Vista?

Amanda May 2, 2011

Ok, so I’m having an issue with my other computer. I turn it on and there’s a message that pops up before I reach the login saying:

“Runtime Error!
Program: C:\Windows\system32\nvvsvc.exe
This application has requested the Runtime to terminate it in an unusual way.”

And then I click Ok and then the screen stays black and only the cursor will be on the screen. Also Alt+Ctrl+Del does not work. Anybody have any suggestions??

  1. Anonymous
    May 4, 2011 at 7:59 pm

    Amanda - also remember that in the worst case scenario, if you can't isolate what's causing the error on login, you can always do a system restore back to a point before the problem started (before the file became corrupt). Hopefully you have system restore turned on and have restore points! :-)

    May 4, 2011 at 12:08 am

    Hello, this exact same questions was asked a few months back. Here is the link for that question and the answer that worked on that case:


    Only difference between what you are experiencing and the previous question is that the previous person could log in. So, in your case follow the steps described but do them on safe mode. You will have to disable some services related to the nvidia card.
    To access safe mode, reboot machine and on BIOS screen keep pressing the F8 key. If you go into safe mode, you should not have the problem you are having now because in safemode only the basic drivers start. That means that it uses the generic video driver that comes with windows to start. Here is a link explaining how to access safemode and also in your case you can use the enable vga mode if available:

  3. Anonymous
    May 3, 2011 at 9:39 am

    nvvsvc.exe is part of the NVidia drivers . It seems that the NVIDIA display driver files are corrupted. You may uninstall the display driver from device manager then reboot and windows will instal a new one then you can update it to newer version from here.

    . It's possible you're using too much of Random Access Memory (RAM) for your video board. Try reducing your screen resolution and see if the problem goes away.

    In Windows Vista, you'd do that this way:

    1. Log out and reboot your machine.
    2. When the machine starts the reboot sequence, press the F8 key repeatedly.
    3. Select Safe Mode from the resulting menu..
    5. Right-click on a blank space on the Desktop and select Personalize.
    6. Click Display Settings.
    7. Adjust the Resolution slider to the left.
    8. Click OK.
    9. Restart back into normal mode.