If Registry Booster does not launch when you click on its icon, or if you get the message (Registry Booster is already running) during (un/)installation, this is probably because you had already ran the trial/full version of Registry Booster before. Registry Booster can be running in the background, minimized to the system tray.
In order to use the product you must goto the system tray bar (next to the system clock) and un-hide all icons. The Registry Booster is displayed as a small picture of a wrench, double-clicking on this will bring the Registry Booster interface up onto the screen and allow you to use it's functions. If you want to upgrade from the trial version to the full version, all you need to do is click on the "Register Now" button and enter your serial number.
If you cannot see the Registry Booster icon in the system tray, please press Ctrl + Shift + Esc on your keyboard to open the task manager. Click on the Processes tab and locate the (registrybooster.exe) entry. Select it and click End Process.
Then try running Registry Booster or (un/)installating again.
