This has happened to me before but I can't recall exactly how I got it back again.
In device manager I have got a COM1 and COM2 port listed but the LPT1 port (that I use to print via) has disappeared.
I have looked in the BOIS (delete button on startup) but cannot find anything that appears to help.
I do recall that the setting for the port should be 378 (Performance & Maintain/system/system properties/Hardware/Resources). But as the LPT1 port is not shown on the list I'm obviously missing something.
Stuartli Thanks for the advice but unfortunately it does not solve my problem. There is no LPT1 port showing up in the Properties>Ports tab! From Device manager I can expand the Ports (COM & LPT) tab but only COM1 and COM2 are listed.