I have a emachine T2542. Two weeks ago it just wouldn't turn on...needed a new power supply. Before my power supply went two weeks ago it was doing this exact thing also at shut down: .....when i got to shut down, i press the power button off but then the yellow/orange light with the trash can icon flashes on and off and the it also buzzes on an off in sync continiously with it. It won't stop so I have to shut it off by the on/off switch in the back of the unit. Please does anyone know what this means. I've looked on emachines website..they have nothing! their troubleshooting advice is useless, not even mentioning my problem. Any ideas....? Thanks!