APS Designer is an application that allows you to use Hindi fonts on Office documents. If you can't see the font on the new computer, check if you can create a new document using the same font. If you can, you will need to create a new file using APS Designer fonts because the one you try to open may be corrupted. If you can't create a new document, you will need to update APS Designer because the version you use may not be compatible with the new computer configuration. You can try to find a newer version using Google search engine because the official web page is no longer available. Also, you can check Software Informer database for alternative solutions. Personally, I recommend you try Google Input Tools.