Can't start postgres server

I'm trying to install gitlab dev version on the windows 10 settings. I got to the part where you start the postgres server and it won't start it says

No PostgreSQL clusters exist; see "man pg_createcluster"

I then try to create a cluster and it says this

Creating new cluster 9.3/main ... config /etc/postgresql/9.3/main data /var/lib/postgresql/9.3/main locale en_US.UTF-8 FATAL: could not create shared memory segment: Function not implemented DETAIL: Failed system call was shmget(key=1, size=48, 03600). child process exited with exit code 1 initdb: removing contents of data directory "/var/lib/postgresql/9.3/main" Error: initdb failed

Can anyone help me out?