Damaged hair can never be fully recovered, especially if it has been bleached or heavily styled for many years, the only way to get really healthy hair is to let it grow out without damaging it further.
CheckDisk, Error Checking, Defrag, MSConfig, Disk Cleanup, Built-in PC Maintenance Tools. Windows comes with some built-in utilities which are essential for maintaining top PC performance. They are CheckDisk or Disk Checking (ChkDsk) in WinXP, Vista and Win7, and Defrag (in all versions of Windows). CheckDisk and ScanDisk can scan your hard drive and repair all kinds of errors, including ones you don't even know you have.
Disk Wipe is a free utility for wiping data from a hard disk in a secure manner. Like Eraser, Disk Wipe includes a number of different algorithms, including DoD 5220-22.M, and Peter Guttman. The really nice thing about this utility is that it is portable, so you don't have to install it to be able to use it.