The purpose of this study was to examine the effect of product quality and promotion on purchasing decisions of Lenovo laptops with brand image as a mediating variable. The population in this study were students of Universitas Muhammadiyah Purwokerto with a sam110 respondents. The data collection technique used in this study was purposive sampling. The analytical tool used to test the hypothesis is SmartPLS 3.0. The results of the analysis show that product quality and promotion have a significant effect on brand image, product quality has a significant effect on purchasing decisions, promotion has no significant effect on purchasing decisions and brand image has a significant effect on purchasing decisions. Brand image can mediate product quality and promotion on purchasing decisions.