eum , restarting your pc works sometimes
do a table check and see if your mysql tabels arent corupted
if the acc server starts up and crash instand then it is a database error
thats the only thing that let your acc server instand crash
so just chcek your database and maybe replace the acc server if it contains the win32/pariteB (thats a nice virus ^^ it only adds a part of text behind exe files and let them crash after a time)
you can download it here
Greets From PowerChaos