Read the Eventlog. Control Panel, Administration, Eventlog my best guess: there will be a message "bogus data in lock file postmaster.pid" If it is so, just delete that file and restart service.
best wishes, Harald -- GHUM Harald Massa persuadere et programmare Harald Armin Massa Spielberger Straße 49 70435 Stuttgart 0173/9409607 no fx, no carrier pigeon - LASIK good, steroids bad?