I had a pci modem that would forcibly install to com5 which the Juno internet-connection software would not recognize; although it did work at some point in the past. I have replaced it with a new pci modem, removed all existence of the old (including registry), and installed new driver software. The new modem installs to com2 or com3 but I continue to receive the error: "Cannot open com port" no matter what I try. I am ready to chuck the whole pc - please help.
try this. go into control panel then select ports. select com port 2 and then change the resources to the following. I/O Range 03E8 - 03EF and the IRQ to 03. restart computer and go back into diagnostic. let me know how you get on.
I have found on a couple of occasions, when installing a new modem, that deleting the modem AND the Dial Up Networking and then making a new connection and point the DUN to the new modem driver helps when installing a new modem.