This package from HP Customer Support installs Microsoft fixes and enhancements for the Microsoft Windows 7 Operating Systems, as well as providing other fixes and enhancements that are specific to the supported notebook models. The HP Customer Support download title of HP Notebooks Essential System Updates version 1.00 Rev: A, allows fixes and enhancements which are required in order to improve the performance of certain notebook models.Models include: Compaq 435 Notebook PC, Compaq 436 Notebook PC, Compaq Mini CQ10 NetBook PC, HP 430 Notebook PC, HP 431 Notebook PC, HP 435 Notebook PC, HP 630 Notebook PC, HP 631 Notebook PC, HP 635 Notebook PC, HP ENVY 17, HP Mini 110 NetBook PC, HP Mini 210 NetBook PC, HP Pavilion dm1 Notebook PC Series, HP Pavilion dv4 Notebook PC Series, HP Pavilion dv6 Notebook PC Series, HP Pavilion dv7 Notebook PC Series, HP Pavilion g4 Notebook PC Series, HP Pavilion g6 Notebook PC Series, HP Pavilion g7 Notebook PC Series.