Freeware Hardware Diagnostic Tool

CPU-Z is a free system and hardware diagnostics tool which provides a number of details about your current PC setup including processor (CPU), memory (RAM), motherboard chipset and your graphics adapter. A review of CPU-Z has also been published.
Download CPU-Z 2.20.2 (from Hardware Diagnostics)

3.5 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XP | Free

ROG CPU-Z is a version of CPU-Z specially developed for Republic of Gamers (ROG) motherboard users, which allows you to monitor and diagnose your system. A review of CPU-Z ROG has also been published.
Download CPU-Z ROG 2.20.1 (from Hardware Diagnostics)

1.8 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / Vista / XP | Free

USB Device Tree Viewer is a small application which interfaces with the Microsot "USBView" developer tool which provides detailed information about connected USB devices. A review of USB Device Tree Viewer has also been published.
Download USB Device Tree Viewer 4.7.2 (from Hardware Diagnostics)

| For Windows 7, Windows 8 / Vista / XP | Free

OCCT (---- OverClock Checking Tool ----) is a free and open source tool used to test the stability and performance of computer hardware, including processors, graphics cards, and power supplies. A review of OCCT has also been published.
Download OCCT 16.1.11 (from Hardware Diagnostics)

6.57 MB | For Windows 7, Windows 8 / Vista / XP | Free

Lenovo Diagnostics is a suite of diagnostic tools that can be used to test the hardware components of a Lenovo computer..
Download Lenovo Diagnostics 4.45.0 (from Hardware Diagnostics)

28.9 MB | For Windows 7, Windows 8 / Vista / XP | Free

ASUS Fan Xpert is a software application that allows you to control and customize the fan speeds of your computer. A review of ASUS Fan Xpert has also been published.
Download ASUS Fan Xpert 3.00.01 (from Hardware Diagnostics)

4.4 MB | For Windows 10 | Free

Memtest86+ is a free memory test software tool that helps you detect memory problems..
Download Memtest86 Plus 8.10 (from Hardware Diagnostics)

58 KB | For Windows 7, Windows 8 / Vista / XP | Free

Access system diagnostics while tuning a PC system is critical for obtaining top performance. A review of SpeedFan has also been published.
Download SpeedFan 4.53 (from Hardware Diagnostics)

1.18 MB | For Windows 7, Windows 8 / Vista / XP | Free

Webroot System Analyzer is a simple, yet very useful tool which does a scan of a PC and lists potential issues. A review of Webroot System Analyzer has also been published.
Download Webroot System Analyzer 9.0.44.46 (from Hardware Diagnostics)

3.5 MB | For Windows 7, Windows 8 / Vista / XP | Free

For PC users wishing to take a look behind the scenes of how your computer is running, then **** WhySoSlow **** is a free program that offers some insight. A review of WhySoSlow has also been published.
Download WhySoSlow 1.61.161.31022 (from Hardware Diagnostics)

2.8 MB | For Windows 7, Windows 8 / Vista / XP | Free