The SCAN function stopped working on my HP 2540 All-in-One.

[wdc202202]

The HP 2540 device is connected to my W10 desktop by a cable (not wirelessly). All three functions worked a week ago. Now, only the PRINT and COPY functions work. When I call for a scan, I get an error message saying "The computer cannot find a scanner."

Can someone tell me how I "reconnect" the device to the PC so as to include the scanner function? Thanks.

[The_Fossette]

@wdc202202,

Welcome to the HP Support Community!

I reviewed your post and I understand that you are unable to scan from your computer.

Don’t worry, I assure you I will try my best to get this sorted.

I recommend you follow the below steps and check if it helps.

1. With the printer turned on, disconnect the power cord from the rear of the printer and also unplug the power cord from the wall outlet. 
2. Remove USB cable, if present. 
3. Wait for 2-3 minutes, press and hold the power button on your printer for about 30 seconds to remove any additional charge. 
4. Now plug back the power cable straight to a wall outlet without any surge protector or an extension cord (This is important) and then plug back the power cord to the printer. 
5. Turn on the printer and wait till warm-up period finishes and the printer is idle.

If you continue facing the issue, then follow the below steps to root uninstall the printer and reinstall it.

1.) In Windows, search for and open Programs and features

2.) Select your HP Printer

3.) Select Uninstall

4.) In Windows, search for and open Devices and printers

5.) In the Devices and Printers windows look for your HP printer. If you see it listed right-click on it and choose 'Delete' or 'Remove Device'

6.) Open up the run command with the "Windows key + R" key combo.

7.) Type printui.exe /s and click Ok. (Note: there is a space in between “printui.exe” and “/s”)

8.) Click on the "Drivers" tab

9.) Look for HP Printer driver. If you see it Click on it and click Remove at the bottom

10.) Select Ok

11.) Select Apply and Ok on the Print Server Properties windows

12.) Close Devices and Printers

13.) Restart the PC

14.) Download and install the printer software from the below link.

http://hp.care/2nikIQ9

15.) Connect the USB cable ONLY when prompted and follow the on-screen instructions.

Let me know how it goes and you have a great day!

If you wish to show appreciation for my efforts, mark my post as Accept as Solution. Your feedback counts!

Cheers!

[wdc202202]

Fossette: I followed the 5 step process you outlined with no luck; scanner still not recognized, I then Restarted the PC; wonder of wonders, scanning now works fine.  Thanks a million for your help. If I could figure out how to do so, I would send kudos.

[sandytechy20]

@wdc202202

Check Windows Image Acquisition settings

1. In Windows, search for and open View local services.

2. In the Services window, scroll down the list and find Windows Image Acquisition (WIA).

3. Look at the Status and Startup Type values.

   • If the status is Started or Running and the Startup Type is Automatic, WIA is running correctly. Skip to the next step.

     

   • If the status is Disabled or no status displays, right-click Windows Image Acquisition (WIA), click Properties, click the General tab, select Automatic from the Startup type dropdown menu, and then click Start.

     If the Start button is grayed out, go back to the Services menu, make sure Remote Procedure Call, Shell Hardware Detection, RPC Endpoint Mapper, and DCOM Server Process Launcher are running and set as Automatic, and then start WIA.

You can refer this HP document for more assistance:- Click here

I hope that helps.

To thank me for my efforts to help you, please mark my post as an accepted solution so that it benefits several others.

Cheers.