color laserjet pro mfp m475nw printing page with random numbers and letters

Color LaserJet Pro MFP M475NW Random PrintJob

By Hannah HarrisMarch 24, 2026

The HP Color LaserJet Pro MFP M475nw is a multifunction printer (MFP) designed for small offices or home use, offering copying, printing, and scanning functionalities. Users might face a peculiar issue, however, where their printed pages contain random numbers and letters. This article will delve into this issue, exploring its possible causes and providing solutions.

Before we delve into troubleshooting, it's essential to understand that this inconsistency could be due to a glitch in the printer's software or hardware, or even a problem with the installed drivers. Let's begin by discussing the main topics and their subtopics related to this issue.

Understanding the Random Characters Issue

Random numbers and letters appearing on printed pages can be a result of several factors. To solve this issue, we need to understand its possible causes.

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One of the primary reasons for this issue is the printer's spooler service. This service is responsible for sending print jobs to the printer. If there's an error with this service, it could result in unexpected characters being printed on your document.

Spooler Service Errors

The spooler service errors can be caused by a problem with the print driver, a virus infection, or even an incorrect print setting. To tackle this, we need to restart the spooler service and clean the printer's print queue, as explained in the next section.

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Corrupted or Incompatible Drivers

In some cases, outdated or corrupted printer drivers can cause print issues, including the appearance of random characters. Usually, updating your drivers or reinstalling them can solve the problem, as discussed in the following section.

Troubleshooting Steps

Now that we've identified the potential causes, let's move on to discussing the troubleshooting steps to rectify the printing issue with random numbers and letters.

Restart the Spooler Service and Clean the Print Queue

Restarting the spooler service and cleaning the print queue can often resolve print issues. To do this:

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Open the Services panel by typing 'services.msc' into the Run dialog box.
Find 'Print Spooler' in the list, right-click it, and select 'Stop'.
Hold down the -shift key and right-click on the 'Print Spooler' service, then select 'Restart'.
Finally, clean the print queue by opening the Devices and Printers panel, right-clicking on your printer's icon, and selecting 'See what's printing'. Cancel any jobs in the queue.

Update or Reinstall the Printer Drivers

Updating or reinstalling the printer drivers can solve printing issues caused by outdated or corrupted drivers.

Visit the HP official website and find the drivers for your printer model.
Download and install the latest drivers.
If the issue persists, try uninstalling the current drivers and reinstalling them:

Open the Devices and Printers panel, right-click your printer, and select 'Remove device'.
Restart your computer. Windows will attempt to reinstall the drivers automatically.

Additional Checks

Even after following these steps, you might still encounter random characters in your prints. There might be other factors to consider:

Check Your Document

Ensure that the document you're trying to print doesn't contain any hidden characters that are causing the issue. To check this:

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Open your document in a text editor like Notepad.
Press Ctrl+A to select all the text, then press Ctrl+H to open the 'Find and Replace' dialog box.
Look for any hidden characters or text.

Check Your Printer for Any Physical Issues

In rare cases, the physical printer components might be causing the issue. Inspect your printer for any visible problems like jammed paper or faulty print heads. If you find any, address the issue according to your printer's manual.

The HP Color LaserJet Pro MFP M475nw is a reliable printer, and random characters appearing on printed pages should be a rare occurrence. However, if the problem persists even after following the above steps, it might be best to contact HP Customer Support for further assistance. Keeping your printer regularly maintained and promptly addressing any issues will ensure a glitch-free printing experience.