I have a white macbook 2,1 core duo 2GHz, 1GB RAM, 250GB HDD recently replaced, and it's been on the fritz lately. We started getting the fun wheel all the time, and then it slowly froze and stopped working over the course of a few weeks. I did a full reinstall of OS X and things were rosy, for about a day. By the morning the fun wheel was back in action, and it froze up again. I turned it off and now just get a blue screen when I turn it on. I know I could reinstall OS X again and get a day of use, and maybe fix the problem or at least diagnose it... I'm confused because everything worked totally fine after the reinstall, and now it's gone mental. Immediately after the reinstall I ran repair permissions through disk utility and it took about an hour and found a lot to repair, which I thought was strange. I'm wondering if this is a lost cause, or if it's worth having a dabble with the RAM or something else?