This paper represents Handel's early PhD thesis work on instabilities, turbulence and flicker-noise in semiconductors Part 1, focusing on instabilities without considering magnetic fields. The research establishes theoretical foundations for understanding plasma instabilities in semiconductor materials as a source of low-frequency noise, analyzing current-driven instabilities, charge carrier turbulence, and their manifestation as 1/f noise characteristics in semiconductor devices, forming the first part of a comprehensive three-part series that constituted Handel's doctoral dissertation.