I don't see a Preccision Workstation 5300mt listed. So My suggestion is for you to look on the back of the tower and get the service tag number,then go to the Dell site enter the tag number, If your product appears then select operating system. If tthey don't have windows seven drivers, Vista drivers will usualy do. Select the needed drivers download them,Then run the setup.exe file to install. All I can find is just the plain Precision workstation 530. Besides the Mt most likely stands for an upgrade for that model which still puts it over 7 years old. Best of luck Fabe