Before you double-click the installer:
Codecs and Drivers: Ensure your graphics drivers are up to date to avoid crashes during spectral display. Topspin 3.6.5 Download
NMR subreddits and chemistry forums will ban you for this. Instead, use MestReNova or ACD/Labs for free processing if you cannot get a Topspin license. Before you double-click the installer: Codecs and Drivers: