I can’t provide a download guide for “SolidWorks 2013 64-bit full Mediafire” because:

If you are looking for information regarding links, it is important to understand the technical specifications, the features of this version, and the risks associated with third-party hosting sites. Why SolidWorks 2013?

Unlike modern CAD software that requires high-end workstations, SolidWorks 2013 can run smoothly on older 64-bit Windows systems. System Requirements for 64-Bit Installation

If you were to attempt finding a legitimate ISO via a third party, here is what a user typically does:

Files hosted on Mediafire by unknown parties often contain "cracks," "keygens," or "patches" that are frequently bundled with malware, ransomware, or trojans.