I know i'm not going to get 4 thumbs up for providing this resolution because it seems like a hardware problem but what the heck you need some sort of help so here goes.
This error usually occurs when trying to scan or make copies. The scanner bulb is not hot enough or the electrical conditions are not suitable for the HP All-In-One product.
Follow the instructions listed below to resolve this failure.
The scanner lamp lighting should be viewable under the scanner glass right or left corner.
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1 - Scanner lamp lighting
2 - Scanner glass
If the scanner bulb does not light up, the HP All-In-One product may be defective.
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Make sure that the room temperature is suitable for the HP All-in-One product.
Perform a Power Cycle on the unit by following the steps below:
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Turn the unit off.
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Unplug the power cord from the unit.
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Wait 30 seconds, and then re-connect the power cord to the unit.
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Turn the unit on.
Check the power connections:
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Make sure that the unit is connected directly to the wall outlet and not to a power strip.Try a different wall socket.
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Every PC provides a standard power cord; it is possible to use it to check whether the electrical failure is prompted by the cord or not.
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If the Warming up or Scanner failure error messages persist, please move the unit to a different room or building to verify that the building (or room) is grounded properly.
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If your HP All-in-One product uses a external power module, check the power module part number against the part number listed in the User Guide to ensure the proper power module is being used.
If both part numbers do not match and your product is still under warranty, please click the Contact HP link at the top of the page.
If your product is out of warranty, please click the How to Buy link at the top of the page.

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Perform a Partial Reset by following the steps below:
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Unplug the power cord from the HP All-in-One product.Press and hold the appropriate button combination for your HP All-in-One product. The appropriate combination for your model can be consulted in the HP All-in-One Products - Performing a Partial Reset of the All-in-One document.While still holding the buttons down, plug the power cord back in. Release the buttons after the HP All-in-One unit displays the Partial Reset message.
Make a test copy of any document.If this copy is successful, the scanner mechanism is functioning correctly.If the error appears again, Follow the below troubleshooting
Noisy scanner
This failure can occur when the HP All-in-One product is initializing.Every time the unit is turned on, the scanner carriage should move. Sometimes, when the scanner carriage returns to its home position, the carriage could crash and make a loud noise.Within a few seconds, the unit gets blocked, and the front panel display shows a
Scanner failure message.Scanner noise could also be caused by the scanner sensor inside the HP All-in-One product being damaged or not properly in place.To solve this failure, follow the steps below:
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Perform a Power Cycle on the unit by following the steps below:
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Turn the unit off.
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Unplug the power cord from the unit.
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Wait 30 seconds, and then re-connect the power cord to the unit.
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Turn the unit on.
Make a test copy of any document by pressing the Start Copy (black or color) button.
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If this copy is successful, the scanner mechanism is functioning correctlyIf the failure remains unsolved, skip to the following step.
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Perform a Partial Reset on the unit by performing the following steps:
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Unplug the power cord from the HP All-in-One unit.Press and hold the appropriate button combination for your HP All-In-One product. To know the proper combination for your model, check the HP All-in-One Products - Performing a Partial Reset of the All-in-One document.While still holding the buttons down, plug the power cord back in. Release the buttons after the HP All-In-One unit displays the Partial Reset message.
Make a test copy of any document by pressing the Start Copy (black or color) button.If this copy is successful, the scanner mechanism is functioning correctly.
Now if this still doesn't resolve the issue then it's a definite hardware problem my request would be regardless of the thumbs up,call up hp at 1800-474-6836 and ask for their upgrade machines because u'll get a machine with a 50-60% discount and an extended warranty with a 70-80% discount or u may get a warranty for the next two years for $1....Sorry if I can't help you
..yes i do ...this d145 is a pc of ****!...how do i clean under the glas??...take this thing aPART???.....jEEEZ, i'LL NEVER GET IT BACK
together!!
It says scanner failure..turn pwer off and on again , but that does not help.
scan failure we need to turn off and on bt it does not the solution
My hp officejet d 145 says...scanner failure turn power off & on again....this does not help. I have tried to reinstall the software, this does not help.
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I have the same problem. How do I solve this?
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