is a disk error checking utility that verifies the logical integrity of a file system. As you use your hard drive, it can develop bad sectors which slow down hard disk performance and make data writing difficult. Chkdsk scans the hard drive and will check the files and folders for file system errors, lost clusters, lost chains, and bad sectors. When encountering logical inconsistencies in file system data, it will perform the necessary actions to repair the file system data.
Chkdsk will create and display a status report for a disk based on the file system and will list and correct errors on the disk. If used without parameters
, chkdsk displays the status of the disk in the current drive. Chkdsk scans the disk structures and disk surface for possible errors and inconsistencies in separate phases. During the first few phases, it checks the FAT or NTFS for lost clusters, cross-linked files and inconsistent directories. When these steps are completed, it asks you whether you want to run a full scan, during which it actually reads every single sector to prove that it is readable.
Chkdsk can be run from the Recovery Console (correct way)
, the command prompt
or through the Windows GUI
The main thing that keeps utilities like Chkdsk from running successfully is having other programs running in the background. Chkdsk will not check files that are being used by Windows so using Chkdsk in the Recovery Console with the /r
switch is a way to resolve this.
Have you tried using System Restore
or System Restore from a command prompt in Safe Mode
to return to a previous state before your problems began?
Also see Slow Computer/Browser? Check here first; it may not be malware
. There are reasons for slowness and poor performance besides malware - i.e. disk fragmentation, disk errors, corrupt system files, too many startup programs, unnecessary services running, too many browser Add-ons (toolbars), not enough RAM, dirty hardware components, etc. As your system gets older it becomes filled with more files/programs and has a natural tendency to slow down so cleaning and regular maintenance is essential.