Im planning on erasing and install vista again because my PC has gotten to "that point" again. Ive never done it before on PC and I just want to make sure I dont end up with a dead machine.

So far ive just backed up my user folder, can anyone think of anything else I should back up? Also, does anyone have any tips for me, just to be sure I dont find out after Im staring a black screen that I missed some tiny but crucial step?