Quoted from Sarek on HM forums
A) Is HM installed in default path?
B) If you have Win7 (or Vista), consider the following:
1) PC name must be in English and "in one word" - requires reboot after changing.
2) The same for Windows user name. If not - create new Win user with EN name and reboot PC for this user when install Postgres. And he must have admin rights. After installation you can kill this new user - his mission is completed.
3) Secondary logon service must be set to "Autostart".
4) UAC = OFF
5) Disable firewall and antivirus when installing Postgres and HM. Or uninstall them at all.
6) All installations must run "as admin" (by right-click on file). And do them as first thing after PC reboot.
7) If you want to change install path for Postgres (or to set non-default folder for database cluster) - download "standalone" installation file from Download PostgreSQL | EnterpriseDB
8) If your Windows is not in English - you have to install Postgres not in default folder in Program_Files. Create new (example: c:\postgresql) first and select it when install.
9) Install Postgres and HM separarelly, one after one. As admin. If HM (when runs for the 1st time) says "no database" - simply create it via DBControlpanel.
10) If Postgres install fails - after uninstalling don't forget to kill windows user named "postgres":
Go to Start > Programs > Accessories > Command Prompt > Right-Click > Run As Administrator
In the window that appears please type the following and press enter:
net user postgres /delete
exactly as shown. You should get a confirmation if it was successful.
11) Run all pokerclients "as admin" too.
