We have a Leeman Labs PS 950 ICP AES using PSWin. Since after crashing the program due to DOS storage overload the instrument has not worked. The machine responds to the program prompts, but the results are not correct. When running a Hg full peak routine the results show flat (=zero) plots. When scanning any element at any concentration the emission counts are the same, at blank values (5 for Ti and 191 for P), and plots show no peaks. Nothing was changed in the instrument from the day when it worked perfectly well to the next morning when the program crashed. Any suggestions as to possible solutions or even diagnosis?