HDD Regenerator!

MHDD is the most popular freeware program for low-level HDD diagnostics.

Victoria - An experimental program to work with HDD. Victoria is a small application designed to assess performance, test and perform minor repairs to your IDE drive and SATA HDD. It's designed primarily for HDD repairmen in stationary conditions and is not intended to test the system hard drive. However, compared with the DOS-programs, the utility for Windows provides the following benefits:

SpinRite is a computer software program for scanning magnetic data storage devices such as hard disks, recovering data from them and refreshing their surfaces.

HDAT2 is program for test or diagnostics of ATA/ATAPI/SATA, SSD, USB and SCSI devices.

SeaTools is a diagnostic tool that helps you determine the condition of the disk drive in your external hard drive, desktop or laptop computer. The installation needs dot.NET 4 as a precondition. If dot.NET 4 is not installed, it must be installed before. Then in a further step the new dot.NET 4-installation must be updated, before you can install SeaTools.It includes several tests that will examine the physical media on your Seagate or Maxtor disk drive and any other non-Seagate disk drive.

DiskFresh is a simple yet powerful tool that can refresh your hard disk signal without changing its data by reading and writing each sector and hence making your disk more reliable for storage. It also informs you if there are any damaged/bad sectors so you know the right time to replace your disk. The best part is, unlike other tools it does all this when Windows is running and it does not interfere with the speed of your work at all.

DRevitalize is a program that repairs bad sectors (physical defects) on popular magnetic media (hard drives and also floppy drives to some extent) by generating a special sequence of high and low signals around the physically damaged area. The surface of almost any drive can be repaired with this utility (even hard drives that were dropped down or exposed to strong electromagnetic fields). For more informations please read the full documentation.

Pc-Check® is your ready-to-use-now diagnostic software. With its self-booting start-up, you don’t have to worry about which operating system is installed. Pc-Check only tests the hardware you want it to. No gimmicks, no files touched, no brand names considered — just reliable hardware test results.