Error: Printhead missing or incorrectly installed

[Memaw4x]

Error: Printhead problem.
The printer worked fine yesterday and today I get this error. I have unplugged it from the wall and unplugged the cord from the printer, still same error. 

[CageyPotter]

I followed the instuctions to remove the cartridges and printhead then replace them and power off, but get same pringhead missing error. Unable to print from PC or make copies.

[Riddle_Decipher · Accepted solution]

@Memaw4x & @CageyPotter 

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[CageyPotter]

I have an HP Office Jet Pro 8600.  I have tried turning it off, unplugging the power, and removing the printerhead. Still won't print.

[Memaw4x]

Remove the Printhead by flipping down the gray arm on the side of the head. That will release it. Then with a lint free cloth dust the backside of the Printhead then return to printer. That worked for me. 

[Riddle_Decipher]

@Memaw4x That's awesome, I'm glad that worked out for you, 

And @CageyPotter if the steps done by the OP doesn't help, here's what you need to do: click here & skip to step 2

Keep me posted.