Operativsystem?
Service pack?
http://support.microsoft.com/kb/159119
"Cross Linked Files and Bad Sectors
Perhaps the most common hard disk problems are also the most minor. These include things like cross linked files, lost chains, and bad sectors. Any time that you encounter such problems, they can usually be repaired through SCANDISK, assuming that you’re using a Windows 9x environment.
If you’re running Windows 2000 and have a hard disk that’s formatted as NTFS, then you’re not supposed to have these problems. NTFS uses a transaction logging system that keeps common hard disk problems to an absolute minimum. However, even NTFS isn’t perfect. It’s still possible to have hard disk problems, even in an NTFS environment. If you do have hard disk problems in Windows 2000, try using the CHKDSK command to fix the problem. CHKDSK will ask you to reboot your machine and will then correct the problem during the reboot. This process may take some time to complete though, as CHKDSK is very thorough. There’s also a less sophisticated version of CHKDSK that’s included with Windows 9x, but you’re usually better off using SCANDISK.
Of course SCANDISK and CHKDSK aren’t your only repair options. There are a plethora of third party hard disk repair tools out there. When it comes to repairing the more common hard disk problems, I prefer to use Norton’s Disk Doctor. Disk Doctor is included in Symantec’s Norton System Works 2001. In my own personal experience, Disk Doctor tends to do a little bit better of a job repairing common problems than Scan Disk does. It also offers some recovery options for bigger disasters."