System Hang Or Slow Processing During Complete Start Windows XP

While System Booting and After Show Desktop System Hang Or System Slow............

Frist Of all UNINSTALL ANTIVIRUS From Your System

Check Space In C: DRIVE

Use Recovery Consol With CHKDSK /R Command

Disk DEFRAGMENT Now

And Best Of  Luck
Deepak Kumar Verma 9214012330