I purchased this graphics card for my HP Pavilion 554y. I followed the installation instructions to a T. Disabled current driver, shut down, remove cables, insert card into PCI slot, reboot, install driver.
After installing the driver and rebooting my PC, I began experiencing major problems when my desktop appeared.
The screen goes black for a few seconds when I attempt to perform even the most basic of tasks, and none of the windows will load completely. It doesn't take long for the computer to completely freeze...

Can anyone help me get to the root of the problem?