1. Try in in another user. Log out of the user you use and into your spare account. If that works it could be an addon or a conflict. If it doesn't work, my bet is some addon.
2. Clean out Chrome. Here's how -> http://productforums.google.com/forum/#!topic/chrome/zIV_mQn1L60
Uninstalling and reinstalling Chrome never removes what's in that folder at the link I gave.
i am running XP and was using Chrome for about 1 year. Until recently it worked very well. Now it is a CPU hog (100%) and will hardly run. I didn't add anything to it. I tried uninstalling and reinstalling it and that doesn'r really help. It is fine for about a day then stops working. ie8 works and uses only about 10 to 20% CPU. Is there something else i can try to fix this problem?