Freeware Hardware Diagnostic Tool

Though it usually isn't something which all users have to pay attention to, the PC is powered by several components of which the operating temperature is an important value to look at. A review of Open Hardware Monitor has also been published.
Download Open Hardware Monitor 0.9.6 (from Hardware Diagnostics)

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

Software designed to monitor system temperatures and run benchmarks, RealTemp is a free and speedy software utility. A review of RealTemp has also been published.
Download RealTemp 3.70 (from Hardware Diagnostics)

323 KB | 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

StressMyPC is a great portable freeware application with a simple premise: test how long your PC battery can go before the battery dies. A review of StressMyPC has also been published.
Download StressMyPC 5.66 (from Hardware Diagnostics)

0.02 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / 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

BlueScreenView is a simple and freeware application which gives Windows users some insight into what caused the infamous blue screen of death. A review of BlueScreenView has also been published.
Download BlueScreenView 1.55 (from Hardware Diagnostics)

0.06 MB | For Windows 7, Windows 8 (64-bit, 32-bit) / 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 15.0.11 (from Hardware Diagnostics)

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

Sidebar Diagnostics is a utility that displays information and diagnostics on the components of your computer directly on the desktop. A review of Sidebar Diagnostics has also been published.
Download Sidebar Diagnostics 3.6.3 (from Hardware Diagnostics)

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

AI Suite II is a comprehensive suite that includes five very useful applications from Asus..
Download AI Suite II 1.02.15 (from Hardware Diagnostics)

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

Memtest86 is a thorough, standalone memory test for x86 architecture computers..
Download Memtest86 11.5.1000 (from Hardware Diagnostics)

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