I think problem is not the connection. It pulls a paper. so the printer is connected to LPT1 it is communicating, but it prints nothing. so it might be rendering or something

it is USB printer connected to IOgear print server which is wired with Ethernet cable to the router. the printer turns on and pulls paper when I give print command but nothing prints on

I disabled spool then I got unable to initialize error, I re-enabled spool, then still does not print anything.

I typed full path of txt file and the printer pulls a paper but still not print anything.

I use networked printer but you can use USB printer with LPT1 if you link USB printer with net use

I have network printer. I wanted to print documents from command prompt
so I gave command
net use LPT1 \\<machine>\<printer share> /yes

to link up network printer with LPT1

then using print...