Has your Toshiba laptop been freezing or crashing down lately? If you have had a hard time saving information, then your hard disk may have errors that will require troubleshooting and repairing. Disk errors are data corruptions caused by bad sectors that physically damage your hard disk, causing start-up problems, read errors and data writing problems, generally deterring the performance of your computer. With a few troubleshooting steps and guidelines, you can locate and fix those errors before your hard disk is completely damaged.