... stick,screen,LCD cable,HDD and so on. 2,Second, be sure of using the original fan3,In the process ... of installation, pls make sure every connectors are installed ... cooling system,put the cooling paste or special Silicagel on VGA-card,Northbridge and CPU.5,Finally, check all ... Career Contact: Vivi luoMobile:86-15815596229TEL:86-755-88365064 Top quality of DV4 486723-001