I bought a compatible cartridge for an HP LaserJet Pro M404, installed it, but the printer is giving an error and won't recognize the consumable. Is it a problem with the cartridge itself or do I need to reset something in the printer's settings?
First, check if the cartridge is installed correctly - sometimes compatible consumables don't sit flush or the protective tape isn't fully removed. If everything looks good, try turning off the printer for a minute, removing the cartridge and reinstalling it, then powering the device back on - this often helps reset the sensors. If the error persists, go into the printer's menu and look for an option like "Reset supplies" or "Clear supplies" - some models require you to manually confirm the new cartridge. If nothing works, the problem is most likely with the cartridge itself (chip incompatibility or a defect), and you should try a different one.
The toner level control chip on a compatible cartridge often requires a manual reset before first use. There's a small black tab or lever on the cartridge - you need to move it or press it to activate the chip. A lot of people forget about this, especially if the cartridge instructions were in English or just didn't get read. Check the packaging - it usually says where it is, or look for it along the cartridge edges.
If you've already moved the tab, then take the cartridge out again and make sure the protective film is completely removed (sometimes it runs really long all the way down the body), and gently clean the cartridge contacts with a soft dry cloth. Do the same thing with the contacts in the printer itself - dust or toner residue sometimes builds up there.
After that, put the cartridge back in and turn the printer off for about thirty seconds, then turn it back on. If the printer still doesn't recognize the cartridge, the problem's most likely with the cartridge itself - either it's defective or the chip's incompatible. In that case, contact the seller with a claim for a return.
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