I've been struggling with my computer only having 2 gig of ram becasue I play at Ongame and between the sites brutal software, HEM, my music and whatever scripts and Browsers I have open (57 process or more) I get some freezing issues with the client at times that may be attributed to ram. What I did was take out my two 1 gig DDR2 chips and took them to Tiger Direct (pretty good store usually) to get an upgrade or 2 more. The guy gave me 2 more 1 gig DDR2 chips that are supposed to be compatible with my 4200's, It even says so on the packaging. I installed them along with the old chips and now have issues.

My cpu (core 2 duo 1.86GHz ) constantly jumps to 50-60% and sometimes runs at 100% for minutes at a time. My system info is only showing 2.99 gig of ram and I need to know if it's a compatibility issue or a setting that I can maybe adjust. Would something like a format or a possible Defrag help at all?

Maybe just go back and get some different ram?