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5 best diagnostic tools for your PC

We all know that PCs sometimes run into glitches and quirks. Even brand new computers can have their share of problems. When they do, we want to fix them as quickly as possible.

Thankfully, there are hundreds of diagnostic tools out there to help you address just about any problem you could be having with your Windows computer. If your computer is on the fritz, a diagnostic tool might be the solution you need. We’ve rounded up five of the best diagnostic tools for your PC.

If you are worried about the safety of your devices, tap or click here to check out our pick for antivirus software.

1. Windows Memory Diagnostic Tool

If you aren’t a fan of third-party apps, you’re in luck. Windows Memory Diagnostic Tool is built directly into the operating system, so you won’t have to download anything extra.

What does it do? It scans your RAM to see if they have errors. Once it finds the error, it will tell you where it is so you can fix it. It’s relatively simple to run:

  • Hold down the Win + R keys to open the Run dialogue box.
  • Type mdsched.exe.
  • Press Enter.
  • The program will ask to restart your computer now to check for problems. Make sure to have all work saved before clicking on this option.

2. WiFi Analyzer

Ever struggle with sluggish internet? Slow Wi-fi can cause problems, so if your Wi-Fi isn’t meeting your expectations, try using the free Wi-Fi Analyzer tool.

The tool analyzes your network to see if it’s working efficiently or needs to be altered or moved in some way. Once it runs its diagnostics, it will tell you your best options to get a better Wi-Fi signal.

3. Performance Monitor

No matter which version of Windows you have, it contains some form of Performance Monitor to ensure your computer runs smoothly. In Windows 10, it now exists as a separate app that comes with your computer.

Once launched, it shows how much of your CPU is being occupied when you opened the app, but you can add different widgets to give you more information, including energy used and disk usage.

Here’s how to find it in Windows 10: Type Performance Monitor in the search box in the lower-left corner of Windows. Select the Performance Monitor app in the search results and you’re ready to use the tool.


Not only is HWiNFO free, but it also provides the most comprehensive readout of any diagnostic tool on this list. It offers you a complete read-out of all the information you could begin to ask for, including the temperature of your CPU and details of all your hardware and processing components.

Simply open the program and request a report. It’s that simple.

5. Speccy by CCleaner

Another free diagnostic tool, Speccy by CCleaner, can give you as little or as much information as you are looking for. While it does give you details regarding your hardware, it can also help you prevent common issues. For example, you can get real-time temperature readings to ensure your computer never overheats.

While Speccy is free, it has a premium option that comes with even more features for $19.99. The premium version comes with:

  • Advanced PC insights
  • Automatic updates
  • Premium support
  • Recommended for home users

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