I have a small SSD as my OS harddrive (Windows 8.1) and a larger standard harddrive that holds all of my large programs like SolidWorks, Matlab, etc. For reasons that I'm not going to get into, the drive letter for the larger secondary drive got changed so now I am unable to uninstall the old version of SolidWorks because the OS doesn't recognize it with the new drive letter. I have tried uninstalling the software, deleting all the folders and deleting any registry items related to SolidWorks but still cannot re-install. It goes to reinstall and won't let me change the toolbox folder location and then after I start the re-install anyways, it says that the SolidWorks version is "repairing" but there isn't anything there to repair. Did I miss something when removing all the components? Any advice on how to correct this?