Grafix card we installed a xfx grafix card and now gives us a no signal message and shut computer down

That error code is for a failed video processor. This is unfixable, you need a new video card.

Go to guru3d.com and click on the download link. Look for your video card driver that supports windows 7. Hope this helps..

check in your bios settings that the correct settings is enabled if its pci or agp, maybe its some thing like this. hope this helps. also remove your drivers before your take out the card to changed it with another card, by add remove programnmes in control panel.

Try this, uninstall all your video drivers in Device Manager and shut the PC down.
Remove your MX 420 and connect the monitor back to the onboard video ( or previous card ).
Boot the PC and go into the BIOS.
Make sure that you select PCI for the graphics option in the BIOS. You are not using it at this moment, but we want it to work when you do put your MX 420 back in.
Now shut it down and put the MX 420 back in.
When you boot and get the "New Hardware found' message, just cancel it and install the MX420 drivers.

Hope this helps.

NO NO NO!
The 7900 is vastly superior to the 8500gt!
the 8500gt is a low end budget card not suitable for demanding games- return it get rid of it, that is a massive step down form the 7900. Its likegoing from a 7900 to a 7600 or worse!

HELLO YOU HAVE TO GO INTO THE DEVICE MANAGER AND DISABLE THE STANDARD VGA ADPATER. SHUT DOWN THE COMPUTER. RE BOOT. THEN INSTALL THE CARD DRIVERS

its a normal process when you installed a new Video Card. the only problem there is, if its not compatible with the chipset of your main board. it will create an error and slow down your system/computer later on. to check it, see the manual of your main board and find what its chipset.

Hi Carpeteddy,
The ASRock K7VT6 motherboard does not have a intergrated graphics card onboard. So your 1.5V, AGP8X / 4X card needs replaced. It wouldn't hurt to uninstall the AGP's driver software, reboot the system & re-install the software. Check the manufactures web site for updated driver software before replacing it.
Link to ASRock K7VT6 MB: http://www.asrock.com/mb/overview.asp?Model=K7VT6
Here is a link to an XFX 1.5v AGP card:
http://www.tigerdirect.com/applications/SearchTools/item-details.asp?EdpNo=2412161&csid=ITD&body=WARRANTY#tabs
The good part of XFX is its warranted for life!

Good luck Carpeteddy!
Questions?
Mike

does your system have on board grafix? or do you have a grafix card? if its on board grafix try borowing a grafix card off somebody to try in your system or try your grafix card in another system

Could you post your system information as well? CPU, memory and so on.