STEP 1 - Go to Start, then Control Panel



FIGURE 1 - Control Panel. Click Programs and Features.



FIGURE 2 - Click to select Jedi Knight: Mysteries of the Sith. Click Uninstall.



FIGURE 3 - Click Yes.



FIGURE 4 - Choose if you want to keep your Single Player saved games. Choose Yes or No.



FIGURE 5 - Click OK. GOG Mysteries of the Sith is now uninstalled.