回複：請問電腦高手，我曾經裝過一個軟件， 後來我把它刪掉了，

Check following:
1. Stop the program in service or in the program manage if it still runs.
2. run/regedit to delete the registry under either local machine/software/... or current_user/software if it is still there.
3. Delete all sub-directory of program after turn on show all hiden file option.
restart computer.

It should works and good luck!