Cartridge Error

[Nolan18]

Hello,

i have a HP Officejet Pro 9012

i recently tried refilling cartridges, after i done that i get a error that they are still empty.

 
How can i fix this error?

[Valsimot]

The ink level is stored on the cartridge chip, if you have only refilled you have done only half the job. The next half is to replace the chip on each cartridge

[Nolan18]

Thanks for responding,

How should i replace the chip 

[Valsimot]

Carefully remove the original and place the replacement on the same place.