Diagnostic Software
Reviews of the best free software for testing RAM, hard drive health, and CPU temperatures.
Best Free Software to Test RAM for Errors
Discover the best free RAM testing tools, how to run MemTest86 and Windows Memory Diagnostic, and how to interpret errors correctly.
Best Free Tools to Check Hard Drive and SSD Health
Compare the best free tools for checking hard drive and SSD health, understand SMART data, and learn the warning signs of imminent drive failure.
Best Free Software to Monitor CPU Temperatures
Compare the best free CPU temperature monitoring tools including HWMonitor, HWiNFO and Core Temp, and learn what safe and dangerous temperatures look like.
Best Free Benchmarking Tools for PCs
A guide to the best free PC benchmarking tools including Cinebench, 3DMark and UserBenchmark, and how to use scores to spot faults or measure upgrades.
Best Free Tools to Check Your Power Supply's Health
Random shutdowns or reboots? These free tools help you check your PSU's voltage stability and health before you spend money on a replacement.
Best Free Software to Diagnose Network and Wi-Fi Problems
Slow or dropping Wi-Fi? These free network diagnostic tools help you find channel congestion, weak signal spots, and connection issues fast.
How to Read and Understand a Windows Event Viewer Log
Windows Event Viewer looks intimidating but holds vital clues to crashes and errors. Learn how to navigate it and interpret the logs like a technician.
Best Free System Information Tools for Windows and macOS
Need to know exactly what's inside a PC or Mac? These free system information tools reveal hardware specs, drivers, and software details fast.
Best Free Tools to Stress-Test Your PC Safely
Want to confirm a repair or upgrade is stable? These free stress-testing tools push your CPU, GPU, and RAM safely, with tips to avoid overheating.
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