As an A+ Certified Professional you will troubleshoot a number of different problems on the system — this table outlines some of the popular utilities you will use to support or troubleshoot a system. Be sure to know these before taking the A+ Certification exams!

Filename Name Description
chkdisk.exe Check Disk Check your hard drive for problems with the file system and for bad sectors.
regedit.exe Registry Editor Make changes to Registry values; can be used to make selective backups. Prior to Windows XP, there were two editors: regedit.exe and regedt32.exe.
defrag.exe Disk Defragmenter Used from the command line, or graphically through the Microsoft Management Console (MMC) and dfrg.msc.
ntbackup.exe Windows NT backup Back up files to tape or any writable file system.
sfc.exe System File Checker Verifies that system files have not been modified; or, if they have, replaces them with the original. It works with the hidden C:\windows\system32\dllcache directory and the original operating system CD.
taskman.exe Task Manager See running programs and services, terminate problems, and view rudimentary performance information about the system.
perfmon.exe Performance Console View detailed performance information
msconfig.exe System Configuration Tool Reconfigure the boot process for troubleshooting and diagnosing the boot process.
drwtsn32.exe Dr. Watson Configure the level of logging you want to do when applications crash.
System Information View hardware and configuration information for your computer.
Event Viewer Logging component of the operating system; the central location for all logging activity.