Scan your hard drive for read errors with this free tool
Disk checking and benchmarking tool - scans CD/DVD/HDD etc. Freeware.
Scan for errors and repair disks, files,folders and read/write disk image
A set of more than 20 software utilities including but not limited to the ones that can help you get the best performance out of your computer. It also provides an automatic and a one click solution to keep your computer clean and error free.
Disk Check is a free utility that can help you scan your disk drives for errors and fix them. It can also scan entire disk for bad sectors and try to recover them. It uses chkdsk utility in the background making it extremely safe.