I have an old Amiga 500, and it sadly stopped working yesterday. I have tried many things, but it doesnÂ´t work. When i start it, it starts to load the disk, but then it stops for some seconds, and then the screen goes black and it freezes. The power lamp twinkels some times and then it restarts. This happens all the time and i have tried different disks and replacint cables, etc, etc. If you know what the problem is, please help me and say how to fix it.