How to Find CPU Serial Number without Box

Apr 23, 2026

Wise Care 365 helps extract the CPU Serial number on Windows.

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A CPU Serial Number (also called Processor Serial Number / PSN) is a unique identifier embedded in a processor to distinguish one physical CPU from another. If you need to identify your computer’s processor for inventory, licensing, or troubleshooting purposes, retrieving the CPU serial number can be useful.

While Windows does not always display this information directly due to privacy and security concerns, third-party utilities like Wise Care 365 provide a convenient way to access detailed hardware information when the original packaging is unavailable, including your CPU details.This guide walks you through the process step by step to retrieve your CPU serial number.

Steps to View Your CPU Serial Number in Wise Care 365

Wise Care 365 is primarily known as a system optimization tool, but it also includes a System Information. This makes it a simple, user-friendly alternative to command-line tools.

Step 1. Launch the Software

After installing the latest version of Wise Care 365, open the software and ensure you are on the main interface.

Step 2. Select System Monitor

On the top tab bar, switch to System Monitor.

Step 3. Overview the Hardware

On the left-side pane, click on Hardware Overview.

Step 4. Open CPU Information

Then, select CPU under the Hardware Overview section.

Step 5. View Serial Number

On the right-side pane, your CPU Serial Number is listed.

Conclusion

Viewing your CPU serial number is quick and straightforward using Wise Care 365. While not all systems will display the serial number, the software still provides comprehensive CPU details that are useful for diagnostics and system management.

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