I have a Dell Dimension L933r with a 810E chipset and 810AA video. A14 BIOS and Win98SE. Everything has the latest drivers and upgrades. All is fine until I try to install an Ambient vqh1456-A modem. No Matter which of the 4 slots the modem is in, once there, the computer will not power up. Press the on button and there is nothing. Take the modem out, unplug the power cord for a few seconds and all is fine again. The modem works fine in an AMD 500 and another unit that had this same PIII in it. Put a sound card in the same slot and it works fine. This is a project unit and I've never had any modem in it. Help!