No signal on first boot

You don't disable it in Device Manager: reenable it immediately. The correct steps to replace the video card:
1 - you uninstall its driver and reboot at least twice.
2 - You install the new card, plug the Monitor in it and reboot at least once.
3 - you enter in the BIOS and disable it in there, and only in there, and you reboot at least twice with a check in the BIOS that it has remained disabled in between.
3 - you install the new driver.

Simple test - use another cable, of another format (DVI instead of VGA). If it's the same then the card has died, replace it.

if this is a relacement for an old card 1st make sure the old drivers are ubisnatlled and the goto www.nvidia.co.uk and install the latest wqhl drivers and that should remidy it you may also need to reset you monitor settings

I would say yes one on your old computer montior connect and one on the card unless that card has two tv outs    

i recommend a nvidia 9500gt 1gb vga card. It's phenomenal and purely insane graphics^_^

godlover

http://www.evga.com/support/drivers/default.asp?switch=2

Try downloading and installing this one

Ok first, I am sorry to tell you the Dimension 8250 is not VISTA compatible. Especially with that video card. Vista is a power hog and has high demands of your PC. You should really revert back to XP if you want things running normal.

the problem is with display resolution setting which ur monitor doesnt support

press f8 on startup and choose enable vga mode

then widows will boot up in 640x480 mode

then change the resolution to 800x600 or whatever u want

thanks

is video card pluged in tell bios pci express video snaped down good

This would usually indicate that there is a problem that is causing your computer to not boot correctly all of the time. What you have described could be many different problems and without more information I cannot say which one it is.

1. Hard drive. I have ran into Hard Drives that for some reason do not start up correctly right away when you put power to them. This can cause the initial startup to hang possibly indefinitely.
2. Video Card. Something probably firmware is causing your video card to not start up properly when power is first applied.
3. PSU. The power supply could cause similar problems if it cannot supply enough power because the highest power draw is when you first turn on the computer. When you push the reset button the power is already being supplied to most of the components and the ones that did not have enough power to start properly before can do so now.
4. CPU. If the CPU has some minor problems it can cause similar problems. In any case to fix it you can try clocking down the CPU but you are better off replacing it.
5. RAM. I have had similar problems with RAM. Clocking down the RAM fixed the issue.
6. Settings in BIOS. I would check to make sure the setting for init display on boot is set for PCI-e.