I've acquired a computer (4 yr old) that is operating at 32 bit. It has windows 7 installed and has a 64 bit Athlon processor. I'm assuming I can run OS at 64bit. Can I switch to 64 from 32 easily, and will I get any instant benefits? It has 3mb ram fitted, so I presume I can up this with 64bit.
You won't be able to do a re-install unless you have the W7 Product Key.
If W7 is the oem pre-installed, factory activated variety you will not be able to use the product key that you would find by using a keyfinder (Magical Jelly Bean, SIW etc) as that key cannot be input in an ordinary install.
I have a pukka version of W7 on cd, so reinstalling isn't a prob, but is it worth changing to 64bit given the hassle of backing up and reinstalling everything? Baring in mind I've only 3mb ram and am not gaming or photo/film editing.