Oracle express failed to start

If you cannot start Orace express services (OracleXETNSListener and OracleServiceXE) after you changing your computer domain or computer name, try to modify two files as follows:

(1)listener.ora
(2)tnsnames.ora

in
%Oracle_Home%\app\oracle\product\10.2.0\server\NETWORK\ADMIN


Then , restart services. It is work.