HP1120C problem

I've tried posting this before. If you saw and responded previously please
accept my apologies, I've changed servers.

My problem is my 1120C, after many years of service and an OS change (to
win2Kpro) no longer handles large files like multiple page corelfiles or
multiple page pdf files.

What happens is it stops feeding the paper through and the yellow light
starts blinking. Sometimes it kicks up a message that implies I'm using an
unsupported print feature.

Is it just too old or is there a memory fix in my system I can do? I have
increased the memory, not decreased it as might be indicated. I could use a
lot more RAM than I have but my virtual memory has access to about 45GB if
it can find and use it.

Please help if you can!

Thanks,

Nick Coffey