Windows update does not install Windows 7 SP1

rg27612

Honorable
Nov 20, 2013
1
0
10,510
I am running Windows 7 Pro (64 bit, Dell Factory install with on-line upgrade tp Pro) on a Dell 1749 Laptop. 8G Ram. 750 G HD.
Several website indicate i need SP1 to view. Windows Update does not find any updates needed for my machine. other than Bing Desktop which i don't want. How do I (or do I need to) install Windows 7 SP1 on this machine, and which file do i need to download out of the large number to choose from?