HP Printer Error 25 — What It Means & How to Fix It

What Does This Error Mean?

Error 25 on an HP LaserJet printer means the printer ran out of memory while processing a print job. A document was sent that was too large or too complex for the available printer RAM. The printer cannot continue printing the job and will not recover on its own — you need to clear the queue. This is a more severe version of error 17, where the memory overflowed completely rather than just filling temporarily. Reducing document complexity or adding memory solves the problem.

Affected Models

HP LaserJet II
HP LaserJet III
HP LaserJet 4
HP LaserJet 4L
HP LaserJet 4Plus

Common Causes

Print job is too large or complex for the printer's installed RAM
Printing a full-page image or graphic at maximum resolution with low printer memory
Multiple large jobs sent simultaneously filling the print buffer completely
Attempting to print with many custom fonts downloaded to the printer simultaneously
Printing a document that uses very high resolution settings for the printer's RAM capacity

How to Fix It

Clear the print job from the queue on your computer. The printer cannot continue with the current job due to insufficient memory. On Windows, right-click the printer in Control Panel > Devices and Printers, open the print queue, and delete the job.

After clearing the queue, turn the printer off and back on to fully flush its memory before sending another job.
Reduce the print resolution of the document. Open Print Properties on your computer, find the Print Quality or Resolution setting, and reduce it to 300 dpi or 600 dpi. High-resolution printing requires dramatically more memory — cutting resolution in half frees up about 75% of memory.

For everyday text documents, 300-600 dpi looks identical to 1200 dpi in printed form.
Enable the Page Protection feature if your printer supports it. This setting tells the printer to process the entire page before printing, managing memory differently. Look in Print Properties > Advanced or check your printer's control panel under Settings.

Page Protection uses more memory but handles complex pages more gracefully by ensuring the full page is prepared before printing starts.
Split the document into smaller sections. Print one page or a small range of pages at a time. This is especially useful for documents that contain large graphics or images mixed with text on the same page.

For example, if page 5 contains a full-page photo, print pages 1-4, then print page 5 separately using a lower print resolution.
Upgrade the printer's RAM if error 25 occurs regularly. Open the printer and locate the DIMM memory slot (often on the side behind a small access cover). Install a compatible printer memory module — check HP's specifications for your model to find the correct RAM type.

A 32MB DIMM upgrade in an older HP LaserJet costs around $15-$25 and can handle most complex print jobs that would otherwise cause error 25.

When to Call a Professional

Error 25 almost never requires a technician for software-side fixes. However, if you want to add RAM to the printer, a technician can source and install compatible DIMM modules. RAM upgrades are inexpensive ($10-$40) and nearly eliminate future error 25 occurrences for normal print workloads. For very old printers where the maximum RAM still isn't enough, upgrading to a modern printer may be more cost-effective.

Frequently Asked Questions

How is error 25 different from error 20 on HP printers?

Error 20 means the printer detected insufficient memory before or during printing and stopped. Error 25 specifically indicates the print buffer itself overflowed completely. In practice they have the same root cause (not enough RAM) and the same solutions. Older HP LaserJet documentation distinguishes between them, but modern printer firmware handles both conditions more gracefully.

Can I print photos on an old HP LaserJet without getting error 25?

Yes, but you need to reduce the photo resolution before printing. Full-size photos at 1200 dpi can be 50-200 MB of data — far too much for a printer with 8-16 MB of RAM. Reduce the image resolution to 150-200 dpi before printing, which is more than adequate for laser-printed photos. Alternatively, print photos with 'Print as Image' mode which handles memory differently.

Is there a way to check how much RAM my HP LaserJet has?

Yes — print a configuration page from the printer. On most HP LaserJets, go to the control panel and press and hold the Go button for a few seconds. The printed configuration page includes a section showing total RAM installed. You can also find this on HP's support site for your model number.