Nuh ibn Mansur, in an attempt to keep in power, had put Sebüktigin, a former Turkish slave, as the ruler of Ghazna and appointed his son Mahmud as governor of Khorasan. However the Turkish Qarakhanids, already in control of most of Transoxania, joined with Mahmud and moved to depose the Samanids.
Nuh ibn Mansur, sa isang pagtatangka upang mapanatili sa kapangyarihan, nagkaroon na ilagay Sebüktigin, isang dating Turkish alipin, bilang pinuno ng Ghazna at ang kanyang anak na lalaki hinirang Mahmud bilang gobernador ng Khorasan. Subalit ang Turkish Qarakhanids, na sa kontrol ng karamihan ng mga Transoxania, sumali sa Mahmud at inilipat sa saksihan ang Samanids.