Hi, I have installed a new XFX Radeon HD 5670 video card to replace an older Nvidia 8800 GT card. I uninstalled all nvidia drivers and made sure my onboard Intel graphics work. After the install of the video card (no drivers installed yet), the boot screen comes up but it stays there. All fans are working but it just hangs. I tried taking out the card and using the onboard graphics and that loads fine. Plus, I have changed the BIOS settings to load the PCI-E card as priority. I am stuck, please help.