old laptop

Hey, I was wondering if anybody knew a good CPU to upgrade my toshiba satellite l755-s5244 with. the stuff I look at with the specs and stuff doesn't make sense to me, Laptops are SOOOO much more confusuing to upgrade, especialy since things that look like they should work apparently don't...

I have an IBM Thinkpad that comes in with the Intel Core 2 Duo 1.66GHz and a 100GB Hitachi HDD. And because it's running very slow in Win7, I was wondering if I could upgrade to Windows 8.1, but using the 32-bit edition, and I'm not upgrading it to Windows 10 because it only has 2GB RAM. So, is...

> Edit (09/10/15 @10:21am): I guess I need to figure out how to reconnect the chipset to the motherboard. > Edit (09/09/15 @4:33pm): Brought the laptop down to my buddy's computer tech store and they said they're 80% sure the chipset has 'lost connectivity' to the motherboard due to overheating...