Start Up Chime repeats
Hello - My iMac, 20 inch early 2008 won't start up. When the power button is pressed i get the start up chime, the fans turn on, the HD spins then the start up chime sounds again and again in an endless loop.. No video comes on, the keyboard is non responsive. This came upon as a result of over heating I think. Months before this happened the iMac was working sluggish and had frequent freezes.. I opened up the iMac and it had heavy dust clogs on the vents and all inside. Only #1 and #2 LEDs light up..
I have backed up all data on the Drive so the drive is OK.. The memory Chips are fine.. Visually the Motherboard looks fine.. All the tools I have are those for tearing things apart. I cannot test for voltages or any other electronic stuff..
Does anyone have Idea of what part was affected??
Thanks in advance..
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