On 29 Giu, 12:36, "Polymorph" <polymo...@a2central.com.remove-t35- this> wrote: > To: Toinet > > Hmmm, I've never heard of the LED on the motherboard flashing - it does > sound like a power supply problem. Hi Antoine, what about the beep? Give a look to this document (Part I - Start-Up Problems ): http://www.1000bit.it/support/manuali/apple/repair2e/repair.htm Mauro