Decline of the Ghaznavid Dynasty

Name: Decline of the Ghaznavid Dynasty
Start: 1141
End: 1150

Type Event Region Afghanistan Time 1141–1150

By the 1140s the Ghaznavids had declined from a Central Asian military power of the Abbasid era to a remnant state holding only Lahore and Punjab;…

Timeline

1141–1144Lahore · PunjabBahram Shah and his successors faced frequent coups and fraternal rivalries at the Lahore court, dissolving central authority. Local governors held independent military power, tax collection faltered, and the Ghaznavid military machine severely rusted.
1144–1147Ghor · AfghanistanGurid leaders such as Ala al-Din Husayn expanded eastward from Afghanistan's central highlands, seizing Ghaznavid remnants toward Herat and Ghazni. The Ghaznavids lost their Central Asian links and became a local Punjab power.
1147–1150Punjab · PunjabThe Ghaznavids held only Lahore's surroundings and some Punjab towns, unable to launch large-scale expeditions against the Rajput states of northern India. After the 1150s Gurid power would fully replace the Ghaznavids, opening a new era of Islamic rule on the Indian subcontinent.

Ghaznavid dynasty — C.E. Bosworth https://www.britannica.com/topic/Ghaznavid-dynasty
The Later Ghaznavids — Clifford Edmund Bosworth (1977)