bought new graphic card,not workin well

i just bought today
asus nvidia geforce 220 GT

the card plugged in the pc perfectly (pci)

the computer worked fine.

when i installed the driver
my screen mixed all the colors into my screen,
all the screen were mixed colors..

i tried to download the updated driver from the site..
this doin the same thing..

the card was brand new.
i have power supplies 500w
but its kinda old one that my dad gave me from his work..
idk if it matters,,

pls help


p.s
when the driver not installed
the pc works fine (ye but cant play games etc..)

 

Minimum Power supply is 300W, specs and drivers are here.

http://www.nvidia.com/object/product_geforce_gt_220_us.html

 

Good one Hawk22, saves checking about power requirements

Your problem could be caused (is probably caused) by a clash with the previous software that was installed for your old graphics adapter.

Go to Control Panel -> Add or Remove Programs and you will likely see a program for the old graphics adapter. You will need to uninstall it before installing the new one. [It should be in the instructions for installing your new graphics adapter, you uninstall the old graphics adapter's software, shut down, put the new graphics adapter in the computer, then start up and follow the (new) adapter manufacturer instructions to install the software for your new graphics adapter].

If you have trouble, tap, tap, tap the F8 key during the startup screens, that will send you to the Startup Options menu (I expect you have been there before), there you can choose "VGA Mode ". Run in VGA mode to make the changes (make sure the old adapter is uninstalled and then install the new one).

Matt