I inserted a AA64 chip in a 1.1 or 1.0 XBOX, and it worked fine for about a week. But suddenly it stopped working. The light around the Eject button is flashing red and green, and I get a screen telling me the XBOX needs service. I've tried with an original HD, but that didn't make a difference. I get the exact same screen when booting with the AA64 switched off. I've tried flashing the bios, and that seemed to work just fine, but it will still not boot. The next step I thought I'd try is to change the chip to another AA64, but what can I do if this doesn't work? When I boot, the XBOX logo comes as always, but when the boot process is about to continue it fails. I've tried booting Slayers Auto Installer from a DVD, and that works fine. Any Ideas? Martin