CPU-Z - CPU-Z is a freeware that gathers information on some of the main devices of your system : Processor name and number, codename, process, package, cache levels.
MHDD - MHDD is the most popular freeware program for low-level HDD diagnostics.
Speccy - Speccy - find the details of your computer's specs. Great for spotting issues or finding compatible upgrades. Download the latest version free.
HDD Regenerator - HDD Regenerator is a unique program for regeneration of physically damaged hard disk drives.
HWiNFO - Professional System Information and Diagnostics. Comprehensive Hardware Analysis, Monitoring and Reporting for Windows and DOS. FREEWARE. download. Advertisements.
Hard Disk Sentinel - Monitoring hard disk health and temperature. Test and repair HDD problems and predict failures.