For win7 users you will have to disable DEP, and run everytime as administrator. (Run cmd as administrator, and write there bcdedit.exe /set {current} nx AlwaysOff. after restart your PC)
Here is a tool for automatic DISABLING DEP. (for Win 7 and Vista) -->credits goes to (XDXDXD LINK (updated)
For some XPs too!!
Go to Control Panel, System.
Click the Advanced tab, and in the Startup and Recovery area, click Settings.
In the SystemStartup area, click Edit.
In Notepad, click Edit and then click Find.
In the Find what field, type /noexecute and then click Find Next.
In the Find dialog box click Cancel.
Replace the policy_level (for example, "OptIn" default) with "AlwaysOff" (without the quotes).