The subject behavior is indicative of damaged registry entries, or hardware issues.
NOTE: Dumprep.exe is a Windows XP fault logging program that writes serious errors to a file, and prompts you to send the information to Microsoft. It is NOT essential to the operation of Windows XP.
To prevent Dumprep.exe from running:
1. Open a CMD.EXE window.
2. Type the following command and press Enter.
REG DELETE HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /V Dumprep /FNOTE: If Dumprep.exe is NOT configured to start, you will receive:
Error: The system was unable to find the specified registry key or value
3. Shutdown and restart your Windows XP computer.