Can't able to access the SEPM

Dear Friends,

                        I have windows server configured under D drive. Now my windows server drive gets formatted. While accessing thr D drive it shows drive not accessible. Not enough space to access. But there is 2000 symantec clients are connected in that server now no one is in the SEPM. In this case what can i do? Kindly help me on that as soon as possible. Here i attach the screen shot of the error on the windows server.

Regards,

SIMBHU