[QUOTE=bradox;2135262]My HP 8250 printer, will not print untill I renew 4 catridges which it says have passed their expiry date. If I do, it will invalidate the warranty.
The warranty is way out of date, so this does not matter to me.
The printer allowed me to print if I pressed the OK button, for the last month or so, but now it will not work at all.
This is a software problem. How can I fix it please?[/QUOTE]
Have you tried using all new genuine HP carts ?
I usually agree with Eric but this time I would recommend iP4500 and not iP4600
iP4500 has larger tanks and is much easier to refill.
iP4600 introduces new countermeasures
I just bought an iP4500 before they are all gone.