Hello, I have a mirror-drive G4, with a Radeon 8500 graphics card. At some point last year, the fan noise got beyond unbearably loud. In a strange way. So i oppened up my machine, and noticed the Radeon's fan wasn't spinning properly. Because i use my computer for music production exclusively, i reckoned i cold probably do without a fan on my graphics card, and reduce the noise level by unscrewing it. I did that, and my computer carried on fine. Then i got myself an iBook for travel, and my MDD stayed unused for several months. A few days ago, i decided to get back to using it (as it is that little bit more powerful than my Ibook, in theory anyway) but after the startup tone, nothing came up onscreen. I figure my Radeon has died. But i'd like to check things out. But it's not easy without a screen. My questions : -did i really need the fan (i play no games) ? -could my card have "suddenly" died like that ? (surely there'd be some sort of warning signal ?) -can i fix my Radeon ? (i took it out, it doesn't show any outside traces of overheating or anything) -how could i investigate into my MDD's health-state ? (using it in FW target mode with my iBook ?) -is there a cheapo card i can purchase that'll function instead ? (i'd rather not invest in this G4) -could it be something else causing loss of display ? I'm not very competent with computers, hence the silly questions. Thanks ahead for your help.