Hello I recently got a new Graphics card it's this PNY Technologies nVIDIA GeForce 8400GS Graphics Card - 512MB, PCI, VGA/DVI-I. When I tried to put it into the PCI Express slot I could not get it into the slot so I tried to get it into one of the other Slots I got it into one of hte white ones next to it(not sure what its called). When I put it in and turned my PC back on my resolulation was really low. I tried to use hte DISK that Nvidia supply to instal the Drivers for my PC but it said Error we cannot find any hardware to suuport these Drivers.
I recently got my PC repaired it had alot viruses so I had to lsoe my old card and I had same card as before but the 256mb version and it was replaced with hte Intel Graphics onboard the Motherboard that I use so I dunno if I should remove the onbouard graphics accelerator.
PLEASE HELP! Locked low resolution graphics is Microsofts friendly way of saying I got the graphics working! Using some crummy imcompatible driver, etc, but at least it's working. You need to pat it on the back, then do the quick switch-a-roo to fix it, when it's not looking.

PCI-e = install into the PCI express slot.
PCI = is just installed in the other normal PCI slots.

Go to nVidia's offical website:
http://www.nvidia.com/

Select location, then select the tab 'Download Drivers' > 'Download Drivers'

Product Type: GeForce
Product Series: GeForce 8 Series
Product: GeForce 8400GS
Operating System: Windows Vista (you must pick 32bit or 64bit depending on the OS, hopefully you know)
Language: (whatever you want)


Download is quite large in size (~120MB), then install.

I tried that and I got hte same thing look.
http://i56.tinypic.com/mmd1ud.jpgI assume your sure that the OS is 32bit and not 64bit right? Different drivers will be used for each.

Are you 100% sure the card is what it is and not in anyway damaged?

Ensure the card is firmly installed in place (press the front of the card in first, then flaten).

Ensure there is enough power connected for the graphic card. What PSU (power suppy) are you using? Connect the cards power directly with it's own cable to PSU (not shared).

Is the Graphic connected to the monitor via VGA or using DVI cable? Only use one or the other.

Under your BIOS you can disable the onboard graphics.

Under your Control Panel > Device Manager, uninstall the standard VGA (native drivers) that Windows would of tried to install instead. There are two locations to look - 'Monitors' should have your actual drivers for the screen, not a 'Generic', 'Display adapters' is where you want your nVidia drivers to go. It will ask you to reboot.

Attempt to install the drivers.
When I go into Device Manager and then ininstal the Intel onboard graphics in Display Adaptors but I dunno where Monitor is on it. And when I restart to instal the Nvidia graphics the intel onboard graphics automatically instal themself.I cannot find any wires that ACTUALLY fit into hte graphics card it's not very powerful card its pretty weak.It's a 250 watt power supply atleast I think it is and Operating system is windows vista home 32 BIT version.You will have to disable the onboard graphics under the BIOS first before uninstall.
On the start of the boot processes, depending on motherboard, press ESC, DEL, or F2, etc (it should TELL you press 'blah' to enter BIOS)
Then find 'Onboard Graphics' and set to disabled (read motherboard book for details)
Ensure you don't change anything else, save and exit.

I've looked up that graphic card and you are correct, it doesn't need a power cable, HOWEVER the issue might be...

Minimum of a 300 Watt power supply.
Power supply with +12 Volt current rating of 18 Amps (open the case and look at the power supply label).

I still think it's an issue with not enough juice to the card.