Has a working D-Link DFM562-E modem attached serially for fax service. Added a second modem, a D-Link DU-562M via USB, which worked fine, but the serial modem stopped working and had a driver problem in Device Manager. Reload the driver and get the retort "The required section was not found in the inf file" or "Cannot load the drivers for this device". Modem works OK on other machines.
Then installed a further DU-562M via USB. Modem installed but fails diagnostics and is not recognised ny Fax Manager.
Tried a Swann Smart Pro Surfer serial modem, same installation issues.
Now I cannot install any modem either USB or serial, errors as above.
Server is patched up to date, BIOS & HP firmware all up to date. It is an HP Proliant ML350 G3
Ideas, please. Thank you