I have a Thinkpad T61 with a 2.2ghz Core 2 duo (T7500), 2gb of DDR2 RAM, a 5200rpm 320gb HDD and an Nvidia Quadro NVS 140M w/ 128mb of VRAM, and Windows 10 is ungodly slow. I know it's an old laptop, but it's new enough to where windows 10 should be usable on it. What component should I upgrade to speed it the forget up?
edit: forgot to include laptop product line