Hi,
1.
Have you made any changes on the computer prior to this issue?
2.
Is the issue specific to command prompt?
Follow mentioned methods:
Method 1:
Step 1:
Check the issue in Safe mode
http://www.microsoft.com/resources/documentation/windows/xp/all/proddocs/en-us/boot_failsafe.mspx?mfr=true
http://support.microsoft.com/kb/315222
If the issue not persists in safe mode then perform step 2.
Step 2: Perform clean boot.
http://support.microsoft.com/kb/310353
Note:
After performing the troubleshooting steps in clean boot, follow
Steps to configure Windows to use a Normal startup state section from the link to return the computer to
Normal startup mode.
Method 2: Run System File Checker.
You need to have the Windows XP CD to perform System File Checker (SFC) scan on your computer.
SFC scans and verifies the versions of all protected system files after you restart your computer.
Refer to these articles for information on SFC:
Description of Windows XP and Windows Server 2003 System File Checker (Sfc.exe)
http://support.microsoft.com/kb/310747
Method 3: Perform Chkdsk
http://support.microsoft.com/kb/315265
Important:
While performing chkdsk on the hard drive if any bad sectors are found on the hard drive when chkdsk tries to repair that sector if any data available on that might be lost
Additional information:
Provide Event log information when you encounter these types of issues
http://support.microsoft.com/kb/308427
Hope the above information is helpful.
