Printer says no computer found when trying to scan, used to work All in One 4635?

[MJM6]

Out of no where, scanning no longer works.  Says no computer detected. I have done the wizard, all recommended updates and  troubleshooting. More than once.  It finds my xfinity network in set up wizard and I entered my password where it said wpa/wep.  Is this NOT what I enter here?  If not, what?  When I printed out the test results, everything passed and has excellent signal. When I entered the IP address, through wizard, it says not the right network and I don't know what to do from there..  I can print, just can't scan.   I am set up wireless and cannot use USB (I attempted and was told Windows 7 doesn't support it)

Please help.

[atharva_gp · Accepted solution]

@MJM6,

Thanks for reaching out to the HP Support community!

Let's try these steps:

Step 1: Restart the Router, Printer, and PC in a sequence.

• Turn off the Router. Wait for 60 seconds. Turn the Router back on.
• Turn off the Printer. Wait for 60 seconds. Turn the Printer back on.
• Turn off the Computer. Wait for 60 seconds. Turn the Computer back on.
• Try scanning the document. If the issue persists, proceed to the next step.

Step 2: Run the Print and Scan Doctor

• Download and run HP Print and Scan Doctor to automatically diagnose and resolve printer hardware and connection issues.
• After the Print and Scan Doctor opens, click Fix Scanning to test your scanner, and then follow any instructions to resolve the issue.
• Try to scan. If the error persists, continue to the next step.

Step 3: Uninstall and reinstall the printer software

• Let's try uninstalling the printer and re-installing the printer driver at the root level. This may fix the issue.
• In Windows, search for 'Control Panel' and open 'Programs' or 'Programs and features' and select 'Uninstall a Program'.
• Select your HP Printer.
• Select Uninstall.
• In Windows, search for 'Control Panel' and look for 'View devices and printers'option under 'Hardware and Sound'.
• In the Devices and Printers window look for your HP printer. If you see it listed right-click on it and choose 'Delete' or 'Remove Device'.
• Open up the run command with the "Windows key + R" key combo.
• Type printui.exe /s and click Ok. (Note: there is a space in between “printui.exe” and “/s”)
• Click on the "Drivers" tab.
• Look for HP Printer driver. If you see it Click on it and click Remove at the bottom.
• Select Ok.
• Select Apply and Ok on the Print Server Properties windows.
• Close Devices and Printers.
• Open up the run command with the "Windows key + R" key combo.
• Type c:/programdata and click Ok. Go to Hewlett Packard folder, remove any printer related folders & files.
• Restart the computer.
• Download the printer driver and install it from this link. Open the downloaded file, follow onscreen instructions and complete installation
• Try scanning from your PC again and check if you can scan.

Let me know if this helps. 

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