H.P. Desk jet 3845 cartridge problem.?

I have a problem, after refilling my cartridge for the first time, on my newish printer. I get an error message saying cartridge is empty, even after the usual prime / clean cycles. I have had 9 H.P. printers in the past and never had this before, having always refilled them myself. Has H.P. followed the Epsom route in chipping the cartridge, to prevent refilling?, if so does anyone have a fix for it?. I will not buy H.P. again as their quality has reached rock bottom with the D.J. 3845, parts have fell off, the carraige keeps jamming, and the paper feed often loads up several sheets at a time, Its a little used printer, sadly now out of warranty, H.P. do not reply to emails, nor do they state in their advertising hype, that the cartridges are crippled if its refilled, so much for recycling by the major companies. Any help would be appreciated, many thanks.