Start by trying a different printer cable. If that fails check the BIOS
(hardware configuration) settings to ensure that the port is set for
bidirectional printer communications.

--
Richard G. Harper [MVP Win9x]
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wrote in message
...
I start printing ok running Deskjet 640C with windows 98
parallel port and cable. Prints ok for a few pages then
loses communication with computer and starts garbling with
symbols and prints empty pages. No conflicts with drivers
and correct port selected.