I am receiving an error message that displays USRprbda.exe DLL Initialization Failed and then the PC displays the blue screen that says IRQ is not less or equal. I thought it was the video card so I replaced it with a new one. Has anyone seen this before?

Sounds like a problem with your USRobotics modem.

If you can go in safe mode go in device manager, double click on the modem, click drivers on the top and choose Roll Back Driver and then reboot.

If that doesn't do it go back safe mode go in device manager, right click on the modem, choose uninstall and then reboot.

You can also try verifier.exe/create standard settings/automatically select all drivers.

If that doesn't do it remove the device from your PCI slot. There's a possibility of a hardware failure.