Was playin cod black ops earlyer on when the screen just froze reset the system and its bein funny since at first it just would not load up to the main xbox home page and kept freezin/crashing then it did. it asked to install a update but when it finished the update and restarted the system it kept on wanting to keep trying to install the same update when it didnt freeze and wont let me go xbox live. i decided to try playing it with out going on live and it has since cleared all avatars theres just a grey body and it freeze's about 10 seconds after switching on if not sooner tried clearing the system chache but has made no difference just delayed the freezing sometimes. also i have had the xbox for about a year or so and have had no problems with playing games but just started to go online "still on trial xbox live gold membership" so it seems xbox live related. btw i have tried your freezing walk through guide and none of that made any difference. any help would be great.