I recently tried to install an xfx HD5670 graphics card and when I push the power button on the computer, I get a loud fan and the screen is just blank(black) and nothing happens. I did put in a 480 PSU. The computer works fine when I take the card out. I even changed the setting on the BIOS to start up with the PCI-E. Might be that the computer is too old for it(2005), it's a HP a1310n. I upgraded to windows 7 so not sure what it could be. I did tried to updat BIOS but it wouldn't do it. I get a "can't update BIOS(1)." message. Any ideas?
Another thing, after I take out the card and restart the computer I get the loud fan for 2-3 seconds then it goes away. When I try to start the computer with the card, the fan noise is there the whole time until I shut the computer off.
it should work but it will use more power than 5670 since the card need 1 6 pin pci-e power connector. like i mention before if your real problem lies on power supply then getting this card won't solve your problem.