I recently DBan-wiped my old Dell E1505 laptop (purchased new, circa 2006 or 2007) and then installed Windows 7 (64-bit). I’m trying to eke as much life out of this laptop as I can. I then decided to upgrade my processor from the Intel T5600 to the T7600, the max for this laptop. DellPartsPeople created a great instructional video, embedded below:
They tell you all you need to know to do this yourself, so there’s no need to reinvent the wheel here. I’ve included supplemental photos from my following of their instructions.