Repair and disassembly guides for HP printers.

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Why doesn't it recognize new cartridges

why doesn't my 2540 hp recognize new cartridges

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Hi Doug,

Are the cartridges HP brand? HP has recently pushed firmware in a number of their printers which causes the printers to reject third-party brand ink cartridges.

For more information (or other tips if they are HP brand) here's the official HP page about cartridge errors in your model:

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I concur with @taylor_whitney on her suspicion about the firmware. The sad part on this is that it was not a recent update that caused this. Apparently HP has it programed in the firmware for non-HP cartridges to fail at a certain date.


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doug kasper will be eternally grateful.
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