Trying to install a pci 56k modem in my system in my sig. I have tried a cheap best data modem and a diamond Supramax LE. Both are brand new and I get the same problem with both. I plug them into my pci slot and turn on the computer. I get 1 long beep on start up and my monitor never comes on. I take the modem out and the system runs just fine. Any help is appreciated.