When you press Start / Find, the Files or Folders and Computer commands may have disappeared.

If you right-click Network Neighborhood, Find Computer may be missing.

If you right-click My Computer, Find may be missing.

You have a corrupt or missing registry entry. Use Regedt32 to navigate to the following key:

HKEY_LOCAL_MACHINE\Software\Microsoft\Windows\CurrentVersion\explorer\FindExtensions\ShellFind

NOTE: If the key path is not present, Add Key from the Edit menu.

There should be a <No Name> Value Name in the right hand pane that contains the following REG_SZ string data:

\{61E218E0-65D3-101B-9F08-061CEAC3D50D\}

If the value name is not present, use Add Value on the Edit menu to add an un-named (blank) value. Then set the string data.

NOTE: The Find command can be missing from the Start menu if NoFind is implemented.