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.
In the automatic maintenance mode, Windows 8.1 runs background system scans constantly, looking for virus and malware intrusions using your installed virus checking software. To run your own scan, open Computer, right-click on the drive you wish to scan and select Scan from the drop-down menu. Virus and malware scans generally come with two choices: quick and thorough. A quick scan can usually detect and delete most malware.